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Fasteners

Shri Parvati Industries · Trademark Brand SPFL®

SPFL® Industrial Fasteners

Fastener requirements should be specified by product type, material/grade, size, thread, standard and quantity. Use the enquiry process to provide your exact requirement or drawing.

Fastener Subcategories

Technical Selection

Capture material/grade, nominal diameter, length, thread form/pitch, finish, standard and quantity as applicable to the selected fastener.

Enquiry Documentation

Customers can share a drawing, specification or purchase requirement so dimensions and applicable standards can be reviewed.

TECHNICAL REFERENCE

Bolt, Screw, Stud & Anchor Specifications

The tables below are transcribed from the dimensional reference supplied for this catalogue. Unless otherwise stated, dimensions are in millimetres (mm). The source document marks all information as strictly informative; confirm the required dimensions, material, standard and availability for each enquiry.

Bolts & anchors

DIN 186 – Tee-head bolts with square head
d₁ b k s
M6 18 4.5 6
M8 22 5.5 8
M10 26 7 10
M12 30 8 12
M16 38 10.5 16
M20 46 13 20
U-bolt standard
Nominal Pipe Size (Imperial) Nominal Pipe Size (Metric) A A1 C Thread Size
1/2 15 12 48 29 M6
3/4 20 15 53 35 M6
1 25 20 60 42 M6
1 1/4 32 25 70 52 M8
1 1/2 40 30 75 60 M8
2 50 35 85 72 M8
2 1/2 65 40 100 88 M10
3 80 40 115 103 M10
4 100 40 140 130 M12
5 125 40 165 153 M12
6 150 50 195 182 M12
7 175 50 225 209 M12
8 200 50 245 240 M16
9 225 50 275 264 M16
10 250 50 315 293 M16
12 300 50 360 342 M16
14 350 85 395 378 M16
16 400 85 485 428 M16
18 450 85 540 478 M16
20 500 85 595 528 M16
DIN 188 – Tee-head bolts with double nip
d b k m n
M8 22 5.5 18 8
M10 26 7 21 10
M12 30 8 26 12
M16 38 10.5 30 16
M24 54 15 43 24
DIN 444 – Eye bolts
d d₁ d₂ b to 125 b to 200
M5 12 5 16
M6 14 6 18
M8 18 8 22 28
M10 20 10 26 32
M12 25 12 30 36
M16 32 16 38 44
M20 40 18 46 52
DIN 525 – Weld studs with hexagon nuts
d₁ l b
M6 130 35
M8 140 40
M10 150 45
M12 170 55
M14 180 60
M16 190 65
M18 200 70
M20 210 75
M22 220 80
M24 230 85
M27 250 90
M30 270 105
M33 290 115
M36 310 125
DIN 529 – Anchor bolts (stone bolts)
d₁ b a approx.
M8 20 24
M10 25 30
M12 30 36
M16 40 48
M20 50 60
M24 60 75
M30 75 95
DIN 558 – Fully threaded machine bolts
d₁ s e k
M6 10 10.89 4
M8 13 14.2 5.3
M10 17 18.72 6.4
M12 19 20.88 7.5
M16 24 26.17 10
M20 30 32.95 12.5
DIN 580 – Lifting eye bolts
d₁ h b d₂ d₃ d₄ k
M6 27.5 12 27 19 14 6.5
M8 36 13 36 20 20 8
M10 45 17 45 25 25 10
M12 53 20.5 54 30 30 12
M14 62 27 63 35 35 14
M16 62 27 63 35 35 14
M20 71 30 72 40 40 16
M22 90 36 90 50 50 20
M24 90 36 90 50 50 20
M27 109 45 108 65 60 24
M30 109 45 108 65 60 24
M33 128 54 126 75 70 28
M36 128 54 126 75 70 28
M42 147 63 144 85 80 32
M45 168 68 166 100 90 38
M48 168 68 166 100 90 38
M52 187 78 184 110 100 42
M56 187 78 184 110 100 42
M64 208 90 206 120 110 48
M72 260 100 260 150 140 60
M80 298 112 296 170 160 68
DIN 609 – Hex fitting bolts with long threaded portion
d k e s b = to 50 b = to 150 b = to 200
M8 5.3 14.38 13 14.5 16.5 21.5
M10 6.4 17.77 16 17.5 19.5 24.5
M12 7.5 19.85 18 20.5 22.5 27.5
M14 8.8 22.78 21 22 24 29
M16 10 26.17 24 25 27 32
M20 12.5 32.95 30 28.5 30.5 35.5
M24 15 39.55 36 – 36.5 41.5
M30 19 50.85 46 – 43 48
DIN 610 – Hex fitting bolts with short threaded portion
d k e s max. b = to 50 b = to 150 b = to 200
M8 5.3 14.38 13 11.5 13.5 18.5
M10 6.4 17.77 16 13.5 15.5 20.5
M12 7.5 19.85 18 15.5 17.5 22.5
M14 8.8 22.78 21 17 19 24
M16 10 26.17 24 19 21 26
M20 12.5 32.95 30 22.5 24.5 29.5
M24 15 39.55 36 26.5 28.5 33.5
M30 19 50.85 46 – 34 39
DIN 6914 – Hex bolts for high-strength structural bolting
d s e k b
M12 22 23.91 8 21
M16 27 29.56 10 26
M20 32 35.03 13 31
M22 36 39.55 14 32
M24 41 45.2 15 34
M27 46 50.85 17 37
M30 50 55.37 19 40
M36 60 66.44 23 48

Screws

DIN 316 – Wing screws
d h e d₂
M4 8.5 18 6
M5 11 24 8
M6 15 30 10
M8 18 36 13
M10 23 48 17
M12 31 62 20
M16 35 70 26
DIN 427 – Slotted headless screws
d₁ b n t min.
M3 3.6 0.4 0.8
M4 4.8 0.6 1.12
M5 6 0.8 1.28
M6 7.2 1 1.6
M8 9.6 1.2 2
M10 12 1.6 2.4
M12 14 2 3.7
M16 18 2.5 4.2
DIN 464 – Knurled thumb screws
d₁ d k d max. s h k max.
M3 12 6 7.5 2.5
M4 16 8 9.5 3.5
M5 20 10 11.5 4
M6 24 12 15 5
M8 30 16 18 6
M10 36 20 23 8
DIN 653 – Flat knurled thumb screws
d d k k
M3 12 2.5
M4 16 3.5
M5 20 4
M6 24 5
M8 30 6
M10 36 8
DIN 931 – Hexagon head screws, partially threaded
d₁ b to 125 b to 200 b over 200 k e s
M4 14 – – 2.8 7.66 7
M5 16 – – 3.5 8.79 8
M6 18 24 – 4 11.05 10
M8 22 28 – 5.3 14.38 13
M10 26 32 45 6.4 18.9 17
M12 30 36 49 7.5 21.1 19
M14 34 40 53 8.8 24.49 22
M16 38 44 57 10 26.75 24
M18 42 48 61 11.5 30.14 27
M20 46 52 65 12.5 33.53 30
M22 50 56 69 14 35.72 32
M24 54 60 73 15 39.98 36
M27 60 66 79 17 45.2 41
M30 66 72 85 18.7 50.85 46
M33 72 78 91 21 55.37 50
M36 78 84 97 22.5 60.79 55
M42 90 96 109 26 71.3 65
M45 96 102 115 28 76.95 70
M48 102 108 121 30 82.60 75
DIN 933 – Hexagon head screws, fully threaded
d₁ k e s
M3 2 6.01 5.5
M4 2.8 7.66 7
M5 3.5 8.79 8
M6 4 11.05 10
M8 5.3 14.38 13
M10 6.4 18.9 17
M12 7.5 21.1 19
M14 8.8 24.49 22
M16 10 26.75 24
M18 11.5 30.14 27
M20 12.5 33.53 30
M22 14 35.72 32
M24 15 39.98 36
M27 17 45.2 41
M30 18.7 50.85 46
M33 21 55.37 50
M36 22.5 60.79 55
M42 26 71.3 65
M48 30 82.6 75
DIN 960 – Hex screws, metric fine thread, part thread
d₁ s e k b= to 125 b= to 150 b= to 200
M8 x 1 13 14.38 5.3 22 28
M10 x 1 17 18.9 6.4 26 32
M10 x 1.25 17 18.9 6.4 26 32
M12 x 1.25 19 21.1 7.5 30 36
M12 x 1.5 19 21.1 7.5 30 36
M14 x 1.5 22 24.49 8.8 34 40
M16 x 1.5 24 26.75 10 38 44
M18 x 1.5 27 30.14 11.5 42 48
M20 x 1.5 30 33.53 12.5 46 52
M20 x 2 30 33.53 12.5 46 52
M24 x 2 36 39.98 15 54 60
DIN 961 – Hex screws, metric fine thread, full thread
d₁ s e k
M8 13 14.38 5.3
M10 17 18.9 6.4
M12 19 21.1 7.5
M14 22 24.49 8.8
M16 24 26.75 10
M18 27 30.14 11.5
M20 30 33.53 12.5
M22 32 35.72 14
M24 36 39.98 15
M27 41 45.63 17
M30 46 51.28 19
M33 50 55.8 21
M36 55 61.31 23
M39 60 66.96 25
M42 65 72.61 26
M45 70 78.26 28
M48 75 83.91 30
M52 80 89.56 33

Studs & threaded rods

DIN 835 – Studs, tap end – 2d
d₁ b e x
M6 18 12 2.5
M8 22 16 3.2
M10 26 20 3.8
M12 30 24 4.3
M16 38 32
DIN 939 – Studs, tap end – 1.25d
d₁ b e
M4 14 5
M5 16 6.5
M6 18 7.5
M7 20 9
M8 22 10
M10 26 12
M12 30 15
M14 34 18
M16 38 20
M18 42 22
M20 46 25
M22 50 28
M24 54 30
M27 60 35
M30 66 38
M33 72 42
M36 78 45
M39 84 50
M42 90 52
M45 96 58
M48 102 60
M52 110 65
DIN 976 – Stud bolt, full thread
d Pitch Length
M-4 0.7 10 mm to 3 m
M-5 0.8 10 mm to 3 m
M-6 1.0 12 mm to 3 m
M-8 1.25 12 mm to 3 m
M-10 1.5 15 mm to 6 m
M-12 1.75 20 mm to 6 m
M-14 2.0 30 mm to 6 m
M-16 2.0 35 mm to 6 m
M-18 2.5 50 mm to 6 m
M-20 2.5 50 mm to 6 m
M-22 2.5 50 mm to 6 m
M-24 3.0 60 mm to 6 m
M-27 3.0 100 mm to 6 m
M-30 3.5 100 mm to 6 m
M-33 3.5 100 mm to 6 m
M-36 4.0 150 mm to 6 m
M-39 4.0 200 mm to 6 m
M-42 4.5 200 mm to 5 m
M-45 4.5 250 mm to 5 m
M-48 5.0 300 mm to 5 m
M-52 5.0 350 mm to 5 m
M-56 5.5 350 mm to 5 m
M-60 5.5 350 mm to 5 m

TECHNICAL REFERENCE

Nut Tables

Dimensions are shown in millimetres (mm). The supplied reference describes the information as strictly informative; confirm the applicable standard and dimensions for each enquiry.

Nut dimensional tables

DIN 193 Flange Nuts Specifications
DIN 193 flange nut drawing
DIN 193 flange nut drawing · Click drawing to open full size
d d1 s m
M5 11.2 8 4.3
M6 14.2 10 5.5
M8 18.2 13 7
M10 21 15 8.5
M12 24 17 10
M16 31 22 14
DIN 196 Flange Nuts Specifications
DIN 196 flange nut drawing
DIN 196 flange nut drawing · Click drawing to open full size
d d1 s m
M5 11.2 8 4.3
M6 14.25 10 5.5
M8 18.25 13 7
M10 21 15 7.9
M12 24 17 8.7
M16 31 22 11.5
DIN 315 – Wing Nuts Specifications
DIN 315 wing nut drawing
DIN 315 wing nut drawing · Click drawing to open full size

Catalogue reference range: M4 to M24

d1 d2 e g h
M4 6 18 1.7 8.5
M5 8 24 2.3 11
M6 10 30 2.7 15
M8 13 36 3.6 18
M10 17 48 4.6 23
M12 20 62 5.6 31
M16 26 70 6.5 35
M20 32 86 7 44
M24 41 106 8.6 53.5
DIN 431 – Lock Nut, Hexagonal Specifications
DIN 431 hexagonal lock nut drawing
DIN 431 hexagonal lock nut drawing · Click drawing to open full size
d1 s e m min.
G 1/8 19 20.88 6
G 1/4 22 23.91 6
G 3/8 27 29.56 7
G 1/2 32 35.03 8
G 5/8 32 35.04 8
G 3/4 36 39.55 9
G 1 46 50.85 10
G 1-1/8 50 55.37 10
G 1-1/4 55 60.79 11
G 1-1/2 60 66.44 12
G 1-3/4 70 76.93 13
G 2 75 82.80 13
DIN 439 – Hexagon Nuts – 0,5d Unchamfered Specifications
DIN 439 unchamfered hex nut drawing, view 1
DIN 439 unchamfered hex nut drawing, view 1 · Click drawing to open full size

Catalogue reference range: M5 to M56

d1 s e m
M2 4 4.32 1.2
M3 5.5 6.01 1.8
M4 7 7.66 2.2
M5 8 8.79 2.7
M6 10 11.05 3.2
M8 13 14.38 4
M10 17 18.9 5
M12 19 21.1 6
M14 22 24.49 7
M16 24 26.75 8
M18 27 29.56 9
M20 30 32.95 10
M22 32 35.03 11
M24 36 39.55 12
M27 41 45.2 13.5
M30 46 50.85 15
M33 50 55.37 16.5
M36 55 60.79 18
DIN 466 – Knurled Nuts, Full Specifications
DIN 466 knurled nut drawing
DIN 466 knurled nut drawing · Click drawing to open full size
d1 d3 d2 max. h max. k max.
M3 12 6 7.5 2.5
M4 16 8 9.5 3.5
M5 20 10 11.5 4
M6 24 12 15 5
M8 30 16 18 6
M10 36 20 23 8
DIN 467 – Knurled Nuts, Full Specifications
d1 d3 d2 max. h max. k max
M3 12 6 3 2.5
M4 16 8 4 3.5
M5 20 10 5 4
M6 24 12 6 5
M8 30 16 8 6
M10 36 20 10 8
DIN 555 – Hexagon Nuts – 0,8d Specifications
DIN 555 hexagon nut drawing, view 1
DIN 555 hexagon nut drawing, view 1 · Click drawing to open full size
DIN 555 hexagon nut drawing, view 2
DIN 555 hexagon nut drawing, view 2 · Click drawing to open full size
d1 s e m
M5 8 8.63 4
M6 10 10.89 5
M8 13 14.2 6.5
M10 17 18.72 8
M12 19 20.88 10
M14 22 24.49 11
M16 24 26.17 13
M18 27 29.56 15
M20 30 32.95 16
M22 32 35.03 18
M24 36 39.55 19
M27 41 45.2 22
M30 46 50.85 24
M33 50 55.37 26
M36 55 60.79 29
M39 60 66.44 31
M42 65 71.3 34
M45 70 76.95 36
M48 75 82.06 38
M52 80 88.25 42
M56 85 93.56 45
M60 90 99.23 48
M64 95 104.86 51
DIN 557 – Square Nuts Specifications

Catalogue reference range: M4 to M24

d1 s e m
M5 8 11.3 4
M6 10 14.1 5
M8 13 18.4 6.5
M10 16 22.6 8
M12 18 25.4 10
M16 24 33.9 13
DIN 562 – Square Thin Nuts Specifications
DIN 562 square thin nut drawing
DIN 562 square thin nut drawing · Click drawing to open full size
d1 s e m
M3 5.5 7 1.8
M4 7 8.9 2.2
M5 8 10.2 2.7
M6 10 12.7 3.2
M8 13 16.5 4
M10 17 21.5 5
M12 19 24 10
M14 22 27.5 11
M16 24 30.1 13
M18 27 34 15
M20 30 37.9 16
M22 32 40.3 18
M24 36 45.5 19
M27 41 52 22
M30 46 58.5 24
M33 50 63.7 26
M36 55 69.9 29
M39 60 76.4 31
DIN 582 – Lifting Eye Nuts Specifications

Catalogue reference range: M6 to M36

d1 d2 d3 d4 h k
M6 28 16 17 36  
M8 36 20 20 36 8
M10 45 25 25 45 10
M12 54 30 30 53 12
M14 54 30 30 53 12
M16 63 35 35 62 14
M20 72 40 40 71 16
M24 90 50 50 90 20
M27 90 50 50 90 20
M30 108 65 60 109 24
M36 126 75 70 128 28
M42 144 85 80 147 32
M48 166 100 90 168 38
M56 184 110 100 187 42
M64 206 120 110 208 48
DIN 917 – Hexagon Cup Nuts – Low Pattern Specifications
d1 e min. h s t min. t max. x max.
M3 6.08 5 5.5 3 3.4 0.75
M4 7.66 5.5 7 4.16 4.64 1.05
M5 8.79 7 8 4.96 5.44 1.2
M6 11.05 9 10 6.71 7.29 1.5
M8 14.38 12 13 9.21 9.79 1.87
M10 18.9 14 16 10.65 11.35 2.25
M12 21.1 16 18 13.15 13.85  
M16 26.75 20 24 16.65 17.35  
M20 32.95 25 30 20.58 21.42  
M24 39.55 30 36 23.58 24.42  
DIN 928 – Square Weld Nuts Specifications Stainless Steel

Catalogue reference range: M5 to M12

d1 e min. h (tolerance symbol unclear in source) m h14 s h14 Sheet Thickness Proof Load N
          min. max.  
M4 9 0.6 3.5 7 0.75 3 6800
M5 12 0.8 4.2 9 0.88 3.5 11000
M6 13 0.8 5 10 0.88 4 15500
M8 18 1 6.5 14 1 4.5 28300
M10 22 1.2 8 17 1.25 5 44800
M12 25 1.4 9.5 19 1.5 5 65300
DIN 929 – Hexagon Weld Nuts Specifications Stainless Steel

Catalogue reference range: M5 to M12

d1 d2 H13 d3 d11 h1 h2 h h14 s h13 Sheet Thickness Proof Load N
              min. max.  
M3 4.5 4.5 0.55 0-0.1 0.25 0-0.1 3 7.5 0.63 2.6 3800
M4 6 6 0.65   0.35   3.5 9 0.75 3 6800
M5 7 7 0.7   0.4   4 10 0.88 3.5 11000
M6 8 8 0.75 0-0.15 0.4   5 11 0.88 4 15500
M8 10.5 10.5 0.9   0.5 0-0.15 6.5 14 1 4.5 28300
M10 12.5 12.5 1.15 0-0.2 0.65   8 17 1.25 5 44800
M12 14.8 14.8 1.4   0.8 0-0.2 10 19 1.5 5 65300
M14 16.8 16.8 1.8   1   11 22 2 6 89700
M16 18.8 18.8 1.8   1   13 24 2 6 123000
DIN 934 – Hexagon Nuts Specifications Stainless Steel

Catalogue reference range: M1.6 to M70

d1 s e m
M1 2.5 2.72 0.8
M1.2 3 3.29 1
M1.4 3 3.29 1.2
M1.6 3.2 3.48 1.3
M1.7 3.5 3.82 1.4
M2 4 4.32 1.6
M2.3 4.5 4.95 1.8
M2.5 5 5.45 2
M2.6 5 5.51 2
M3 5.5 6.01 2.4
M3.5 6 6.01 2.8
M4 7 7.66 3.2
M5 8 8.76 4
M6 10 11.05 5
M7 11 12.12 5.5
M8 13 14.38 6.5
M10 17 18.9 8
M12 19 21.1 10
M14 22 24.49 11
M16 24 26.75 13
M18 27 29.56 15
M20 30 32.95 16
M22 32 35.03 18
M24 36 39.55 19
M27 41 45.2 22
M30 46 50.85 24
M33 50 55.37 26
M36 55 60.79 29
M39 60 66.44 31
M42 65 71.3 34
M45 70 76.95 36
M48 75 82.6 38
M52 80 88.25 42
M56 85 95.07 45
M60 90 100.72 48
M64 95 106.37 51
M68 100 112.02 54
M72 105 117.67 58
M76 110 123.32 61
DIN 935 – Castle Nuts Specifications Stainless Steel
d1 s e m max. w max. n min.
M4 7 7.74 5 3.2 1.2
M5 8 8.87 6 4 1.4
M6 10 11.05 7.5 5 2
M8 13 14.38 9.5 6.5 2.5
M10 17 18.9 12 8 2.8
M12 19 21.1 15 10 3.5
M14 22 24.49 16 11 3.5
M16 24 26.75 19 13 4.5
M18 27 29.56 21 15 4.5
M20 30 32.95 22 16 4.5
M22 32 35.03 26 18 5.5
M24 36 39.55 27 19 5.5
M27 41 45.2 30 22 5.5
M30 46 50.85 33 24 7
M33 50 55.37 35 26 7
M36 55 60.79 38 29 7
M39 60 66.44 40 31 7
M42 65 71.3 46 34 9
M45 70 78.26 48 36 9
M48 75 82.6 50 38 9
M52 80 88.25 54 42 9
M56 85 95.07 57 45 9
M58 90 100.72 63 48 9
M60 90 100.72 63 48 11
M64 95 106.37 66 51 11
M68 100 112.02 69 54 11
M72 105 117.67 73 58 11
M76 110 123.32 76 61 11
M80 115 128.97 79 64 11
M85 120 134.62 88 68 14
M90 130 145.77 92 72 14
M95 135 151.42 96 76 14
M100 145 162.72 100 80 14
DIN 937 – Hexagon Jam Nuts Specifications Stainless Steel
d s e m m1
M6 10 11.05 6 3.5
M7 11 12.12 7 4
M8 13 14.38 8 4.5
M10 17 18.9 9 5
M12 19 20.1 10 6
M14 22 24.49 11 7
M16 24 26.75 12 7
M18 27 29.56 13 8
M20 30 32.95 13 8
M22 32 35.05 15 9
M24 36 39.55 15 9
M27 41 45.2 17 11
M30 46 50.85 18 11
M33 50 55.37 20 13
M36 55 60.79 20 13
M39 60 66.96 22 13
M42 65 72.61 23 14
M45 70 78.26 25 16
M48 75 83.91 25 16
M52 80 89.56 27 18
DIN 936 – Hexagon Jam Nuts Specifications
d1 s e m
M8 13 14.38 5
M10 17 18.9 6
M12 19 21.1 7
M14 22 24.49 8
M16 24 26.75 8
M18 27 29.56 9
M20 30 32.95 9
M22 32 35.03 10
M24 36 39.55 10
M27 41 45.2 12
M30 46 50.85 12
M33 50 55.8 14
M36 55 61.31 14
M39 60 66.96 16
M42 65 72.61 16
M45 70 78.26 18
M48 75 83.91 18
M52 80 89.56 20
DIN 980 – Self-Locking Nuts Specifications
d1 s e min d2 h max
M4 7 7.66   4.2
M5 8 8.79   5.1
M6 10 11.05   6
M8 13 14.38   8
M10 17 18.9   10
M12 19 21.1   12
M14 22 24.49   14
M16 24 26.75   16
M18 27 29.56 23 18
M20 30 32.95 27.5 20
M22 32 35.03 29.5 22
M24 36 39.55 31 24
M27 41 45.02   27
M30 46 50.85   30
M33 50 55.37   33
M36 55 60.79   36
DIN 982 – Self- Locking Nuts w/nylon Insert: Heavy Series Specifications

Catalogue reference range: M5 to M24

d1 s e m min h
M5 8 8.79 3.52 6.3
M6 10 11.05 3.92 8
M8 13 14.38 5.15 9.5
M10 17 18.90 6.43 11.5
M12 19 21.1 8.3 14
M14 22 24.49 9.68 16
M16 24 26.75 11.28 18
M20 30 32.95 13.52 22
M24 36 39.55 16.16 28
DIN 985 – Self Locking Nuts w/locking Insert: Standard Series Specifications

Catalogue reference range: M3 to M48

d1 e min. h max. m s
M2 4.91 2.5 1.6 4.5
M2.5 5.51 3.8 2 5
M2.6 5.51 3.8 2 5
M3 6.01 4 2.4 5.5
M3.5 6.64 4.5 2.6 6
M4 7.66 5 2.9 7
M5 8.79 5 3.2 8
M6 11.05 6 4 10
M7 12.12 7.5 4.7 11
M8 14.38 8 5.5 13
M10 18.9 10 6.5 16
M12 21.1 12 8 18
M14 24.49 14 9.5 21
M16 26.75 16 10.5 24
M18 29.56 18.5 13 27
M20 32.95 20 14 30
M22 35.03 22 15 34
M24 39.55 24 15 36
M27 45.2 27 17 41
M30 50.85 30 19 46
M33 55.37 33 22 50
M36 60.79 36 25 55
M39 66.44 39 27 60
M42 72.09 42 29 65
M45 76.95 45 32 70
M48 82.6 48 36 75
DIN 986 – Self Locking Domed Cap Nuts With Nylon Insert Specifications
d1 e min. s m h
M4 7.66 7 2.9 9.6
M5 8.79 8 4.4 10.5
M6 11.05 10 4.9 12
M8 14.38 13 6.44 14
M10 18.9 16 8.04 18.1
M12 21.1 18 10.37 22.5
M16 26.75 24 14.1 27.5
M20 30   16.9 35
DIN 1587 – Hexagon Domed Cap Nuts, Full Pattern Specifications

Catalogue reference range: M3 to M36

d1 h s e
M3 6 5.5 6.08
M4 8 7 7.66
M5 10 8 8.79
M6 12 10 11.05
M8 15 13 14.38
M10 18 17 18.9
M12 22 19 21.1
M14 25 22 24.49
M16 28 24 26.75
M18 32 27 30.14
M20 34 30 33.53
M22 39 32 35.72
M24 42 36 39.98
DIN 1804 – Slotted Round Nuts Specifications
d1 h d2 n
M8 x 1 5 20 4
M10 x 1 6 25 5
M12 x 1.5 6 28 5
M14 x 1.5 7 30 5
M16 x 1.5 7 32 5
M18 x 1.5 8 34 6
M20 x 1.5 8 36 6
M22 x 1.5 9 40 6
M24 x 1.5 9 42 6
M26 x 1.5 10 45 7
M28 x 1.5 10 50 7
M30 x 1.5 10 50 7
M32 x 1.5 11 52 7
M35 x 1.5 11 55 7
M38 x 1.5 11 58 8
M40 x 1.5 12 62 8
M42 x 1.5 12 62 8
M45 x 1.5 12 68 8
M48 x 1.5 13 75 8
M50 x 1.5 13 75 8
M52 x 1.5 13 80 10
M55 x 1.5 13 80 10
M58 x 1.5 13 90 10
M60 x 1.5 13 90 10
M62 x 1.5 14 95 10
M65 x 1.5 14 95 10
M68 x 1.5 14 100 10
M70 x 1.5 14 100 10
M72 x 1.5 14 110 10
M75 x 1.5 14 110 10
DIN 6334 – Hexagon Nuts Specifications

Catalogue reference range: M5 to M20

d1 m e s
M6 18 11.05 10
M8 24 14.38 13
M10 30 18.9 17
M12 36 21.1 19
M14 42 24.4 22
M16 48 26.75 24
M18 54 30.1 27
M20 60 33.53 30
M22 66 35.7 32
M24 72 41.6 36
M27 80 45.6 41
M30 90 51.2 46
M33 100 55.8 50
M36 108 61.3 55
DIN 6915 – Hex Nuts For High Strength Struc. Bolting Specifications
d1 s e m
M12 22 23.91 10
M16 27 29.56 13
M20 32 35.03 16
M22 36 39.55 18
M24 41 45.2 19
M27 46 50.85 22
M30 50 55.37 24
M36 60 66.44 29
DIN 6923 – Hexagonal Flange Nuts Specifications

Catalogue reference range: M3 to M16

d d1 s m e
M5 11.8 8 5 8.79
M6 14.2 10 6 11.05
M8 17.9 13 8 14.38
M10 21.8 15 10 16.64
M12 26 18 12 20.03
M14 29.9 21 14 23.36
M16 34.5 24 16 26.75
M20 42.8 30 20 32.95
DIN 6926 – Self-Locking Hex Flange Nuts: Non Metallic Insert Specifications
d d2max. h max. m s max
M5 11.8 7.1 4.7 8
M6 14.2 9.1 5.7 10
M8 17.9 11.1 7.6 13
M10 21.8 13.5 9.6 15
M12 26 16.1 11.6 18
M14 29.9 18.2 13.3 21
M16 34.5 20.3 15.3 24

TECHNICAL REFERENCE

Washer Tables

Dimensions are shown in millimetres (mm). The supplied reference describes the information as strictly informative; confirm the applicable standard and dimensions for each enquiry.

Washer dimensional tables

DIN 93 – Tab Washers With Long Tab Specifications

Catalogue reference range: M6 to M24

d1 used for d2 b h s
3.2 M3 12 4 13 0.38
4.3 M4 14 5 14 0.38
5.3 M5 17 6 16 0.5
6.4 M6 19 7 18 0.5
8.4 M8 22 8 20 0.75
10.5 M10 26 10 22 0.75
13 M12 30 12 28 1
15 M14 33 12 28 1
17 M16 36 15 32 1
19 M18 40 18 36 1
21 M20 42 18 36 1
23 M22 50 20 42 1
25 M24 50 20 42 1
28 M27 58 23 48 1.6
31 M30 63 26 52 1.6
34 M33 68 28 56 1.6
37 M36 75 30 60 1.6
40 M39 82 32 64 1.6
43 M42 88 35 70 1.6
50 M48 100 40 80 1.6
54 M52 105 44 85 1.6
DIN 125 – Flat Washer Specifications

Catalogue reference range: M2 to M56

d1 for thread size d2 s
1.7 M1.6 4 0.3
2.2 M2 5 0.3
2.7 M2.5 6 0.5
3.2 M3 7 0.5
3.7 M3.5 8 0.5
4.3 M4 9 0.8
5.3 M5 10 1
6.4 M6 12 1.6
7.4 M7 14 1.6
8.4 M8 16 1.6
10.5 M10 20 2
13 M12 24 2.5
15 M14 28 2.5
17 M16 30 3
19 M18 34 3
21 M20 37 3
23 M22 39 3
25 M24 44 4
28 M27 50 4
31 M30 56 4
34 M33 60 5
37 M36 66 5
40 M39 72 6
43 M42 78 7
50 M48 92 8
54 M52 98 8
DIN 126 – Flat Washer Without Chamfer Specifications
d1 used for d2 s
5.5 M5 10 1
6.6 M6 12 1.6
7.6 M7 14 1.6
9 M8 16 1.6
11 M10 20 2
13.5 M12 24 2.5
15.5 M14 28 2.5
17.5 M16 30 3
22 M20 37 3
26 M24 44 4
30 M27 50 4
33 M30 56 4
36 M33 60 5
39 M36 66 5
42 M39 72 6
45 M42 78 7
48 M45 85 7
52 M48 92 8
56 M52 98 8
62 M56 105 9
66 M60 110 9
70 M64 115 9
DIN 127 – Split Lock Washer Specifications

Catalogue reference range: M2 to M36

d1 for screw size d2 s
2.1 M2 4.4 0.5
2.6 M2.5 5.1 0.6
3.1 M3 6.2 0.8
3.6 M3.5 6.7 0.8
4.1 M4 7.6 .09
5.1 M5 9.2 1.2
6.1 M6 11.8 1.6
8.1 M8 14.8 2
10.2 M10 18.1 2.2
12.2 M12 21.1 2.5
14.2 M14 24.1 3
16.2 M16 27.4 3.5
18.2 M18 29.4 3.5
20.2 M20 33.6 4
22.5 M22 35.9 4
24.5 M24 40 5
27.5 M27 43 5
30.5 M30 48.2 6
33.5 M33 55.2 6
36.5 M36 58.2 6
39 M38 61.2 6
42.5 M42 68.2 7
45.5 M45 71.2 7
49 M48 75 7
53 M52 86 8
DIN 128 – Flat Spring Washers Specifications
d1 for screw size d2 s h min h max
2.1 M2 4.4 0.5 0.7 0.9
2.6 M2.5 5.1 0.6 0.9 1.1
3.1 M3 6.2 0.7 1.1 1.3
3.6 M3.5 6.7 0.7 1.1 1.3
4.1 M4 7.6 0.8 1.2 1.4
5.1 M5 9.2 1 1.5 1.7
6.1 M6 11.8 1.3 2 2.2
8.1 M8 14.8 1.6 2.45 2.75
10.2 M10 18.1 1.8 2.85 3.15
12.2 M12 21.1 2.1 3.35 3.65
14.2 M14 24.1 2.4 3.9 4.3
16.2 M16 27.4 2.8 4.5 5.1
18.2 M17 29.4 2.8 4.5 5.1
20.2 M20 33.6 3.2 5.1 5.9
22.2 M21 35.9 3.2 5.1 5.9
24.5 M24 40 4 6.5 7.5
30.5 M30 48.2 6 9.5 10.5
DIN 433 – Flat Washer With Reduced O.D. Specifications
d1 used for d2 s
1.9 M1.8 4 0.3
2.2 M2 4.5 0.3
2.7 M2.5 5 0.5
3.2 M3 6 0.5
3.7 M3.5 7 0.5
4.3 M4 8 0.5
5.3 M5 9 1
6.4 M6 11 1.6
8.4 M8 15 1.6
10.5 M10 18 1.6
13 M12 20 2
15 M14 24 2.5
17 M16 28 2.5
19 M18 30 2.5
21 M20 34 3
DIN 434 – Square Bevel Washer: 8% Specifications

Catalogue reference range: M6 to M24

d1 used for a b s
9 M8 22 22 3.8
11 M10 22 22 3.8
14 M12 26 30 4.9
18 M16 32 36 5.9
22 M20 40 44 7
24 M22 44 50 8
26 M24 56 56 8.5
30 M27 56 56 8.5
33 M30 62 62 9
DIN 435 – Square Bevel Washer: 14% Specifications
d1 used for a b s
9 M8 22 22 4.6
11 M10 22 22 4.6
14 M12 26 30 6.2
18 M16 32 36 7.5
22 M20 40 44 9.2
24 M22 44 50 10
26 M24 56 56 10.8
30 M27 56 56 10.8
33 M30 62 62 11.7
DIN 436 – Square Washer Specifications
d1 for screw a s
9 M8 – –
11 M10 30 3
13.5 M12 40 4
17.5 M16 50 5
22 M20 60 5
24 M22 70 6
26 M24 80 6
30 M27 90 6
33 M30 95 6
36 M35 100 6
39 M38 110 8
42 M41 125 8
45 M44 135 8
48 M47 140 8
52 M51 150 10
56 M55 160 10
DIN 463 – Tab Washers With Long And Short Tab Specifications

Catalogue reference range: M6 to M24

d1 used for d2 h1 h b s
3.2 M3 7 13 5 4 0.38
4.3 M4 9 14 6.5 5 0.38
5.3 M5 10 16 8 6 0.5
6.4 M6 12.5 18 9 7 0.5
8.4 M8 17 20 11 8 0.75
10.5 M10 21 22 13 10 0.75
13 M12 24 28 15 12 1
15 M14 28 28 16 12 1
17 M16 30 32 18 15 1
21 M20 37 36 21 18 1
25 M24 44 42 25 20 1
28 M27 50 48 29 23 1.6
31 M30 56 52 32 26 1.6
34 M33 60 56 34 28 1.6
37 M36 66 60 38 30 1.6
DIN 988 – Shim Washers Specifications
d1 d2 s
M3 6 0.1, 0.2, 0.3, 0.5
M4 8 0.1, 0.2, 0.3, 0.5
M5 10 0.1, 0.2, 0.3, 0.5
M6 12 0.1, 0.2, 0.3, 0.5, 1
M8 14 0.1, 0.2, 0.3, 0.5, 1
M10 16 0.1, 0.2, 0.3, 0.5, 1
M11 17 0.1, 0.2, 0.3, 0.5
M12 18 0.1, 0.2, 0.3, 0.5, 1
M13 19 0.1, 0.2, 0.3, 0.5, 1
M15 21 0.1, 0.2, 0.3, 0.5, 1
M16 22 0.1, 0.2, 0.3, 0.5, 1
M17 24 0.1, 0.2, 0.3, 0.5, 1
M18 25 0.1, 0.2, 0.3, 0.5, 1
M20 28 0.1, 0.2, 0.3, 0.5, 1, 1.5
M22 30 0.1, 0.2, 0.3, 0.5, 1, 1.5
M25 35 0.1, 0.2, 0.3, 0.5, 1, 1.5
M30 42 0.1, 0.2, 0.3, 0.5, 1, 1.5, 2
M35 45 0.1, 0.2, 0.3, 0.5, 1, 1.5
M40 50 0.1, 0.2, 0.3, 0.5, 1, 1.5
DIN 1052 Plain Washer Specifications
d1 used for d2 s
14 M12 58 6
18 M16 68 6
23 M20 80 8
25 M22 92 8
27 M24 105 8
DIN 1440 – Flat Washers , Medium Specifications
d1 d2 s
M3 6 0.8
M4 8 0.8
M5 10 0.8
M6 12 1.6
M7 14 1.6
M8 16 2
M10 20 2.5
M12 25 3
M13 25 3
M14 28 3
M16 28 3
M18 30 4
M20 32 4
M22 34 4
M23 36 4
M25 40 4
M26 40 5
M28 42 5
M30 45 5
M32 50 5
M33 50 5
M35 52 6
M36 52 6
M40 58 6
M45 62 7
M50 68 8
DIN 1441 – Flat Washers Coarse Specifications
d1 d2 s
5.5 10 0.8
7 12 1.6
9 16 2
11 20 2.5
13 25 3
15 28 3
17 28 3
19 30 4
21 32 4
23 34 4
24 36 4
25 38 4
26 40 4
27 40 5
28 40 5
29 42 5
31 45 5
34 50 5
37 52 6
41 58 6
46 62 7
51 68 8
56 75 9
62 80 9
68 90 9
72 95 10
DIN 7989 – Washers Specifications
d1 used for d2 s
11 M10 21 8
14 M12 24 8
18 M16 30 8
22 M20 37 8
26 M24 44 8
30 M27 50 8
33 M30 56 8
DIN 9021 Washer Specifications

Catalogue reference range: M2 to M36

d1 used for d2 max s
3.2 M3 9 0.8
4.3 M4 12 1
5.3 M5 15 1.2
6.4 M6 18 1.6
8.4 M8 24 2
10.5 M10 30 2.5
13 M12 37 3
15 M14 44 3
17 M16 50 3
20 M18 56 4
22 M20 60 4

TECHNICAL REFERENCE

Pin & Rivet Tables

Dimensions are shown in millimetres (mm). The supplied reference describes the information as strictly informative; confirm the applicable standard and dimensions for each enquiry.

Pin and rivet dimensional tables

DIN 7 & ISO 2338 – Dowel Pins Specifications
d1 c approx.
M1 0.2
M1.2 0.25
M1.5 0.3
M2 0.35
M2.5 0.4
M3 0.5
M4 0.63
M5 0.8
M6 1.2
M8 1.6
M10 2
M12 2.5
M16 3
M20 3.5
DIN 7979D – Dowel Pins With Internal Thread Specifications
d1 c d2 b t min.
M6 2.1 M4 6 10
M8 2.6 M5 8 12
M10 3 M6 10 16
M12 3.8 M6 10 16
M16 4.7 M8 12 20
M20 6 M10 16 25
DIN 94 – Cotter Pins Specifications

Catalogue reference range: 3 to 12 mm

Nom. Dia. d1 c a max. b approx.
  min. max. min. max.    
1 0.8 0.9 1.6 1.8 1.6 3
1.2 0.9 1 1.7 2 2.5 3
1.6 1.3 1.4 2.4 2.8 2.5 3.2
2 1.7 1.8 3.2 3.6 2.5 4
2.5 2.1 2.3 4 4.6 2.5 5
3.2 2.7 2.9 5.1 5.8 3.2 6.4
4 3.5 3.7 6.5 7.4 4 8
5 4.4 4.6 8 9.2 4 10
6.3 5.7 5.9 10.3 11.8 4 12.6
8 7.3 7.5 13.1 15 4 16
10 9.3 9.5 16.6 19 6.3 20
13 12.1 12.4 21.7 24.8 6.3 26
STUD PIN DIN 975

Catalogue reference range: M3 to M60

D PITCH L
M4 0.7 10mm ABOVE
M5 0.8 10mm ABOVE
M6 1 10mm ABOVE
M8 1.25 12mm ABOVE
M10 1.5 15mm ABOVE
M12 1.75 15mm ABOVE
M14 2 20mm ABOVE
M16 2 25mm ABOVE
M18 2.5 40mm ABOVE
M20 2.5 40mm ABOVE
M22 2.5 40mm ABOVE
M24 3 50mm ABOVE
M27 3 50mm ABOVE
M30 3.5 50mm ABOVE
M33 3.5 60mm ABOVE
M36 4 75mm ABOVE
M39 4 75mm ABOVE
M42 4.5 100mm ABOVE
M45 4.5 100mm ABOVE
M48 5 125mm ABOVE
M52 5 125mm ABOVE
M56 5.5 150mm ABOVE
M60 5.5 150mm ABOVE
M64 6 150mm ABOVE
M68 6 150mm ABOVE
M72 6 150mm ABOVE
DIN 660 – Round Head Rivets

Catalogue reference range: 3 to 12 mm

d d1 k
2 3.5 1.2
2.5 4.4 1.5
3 5.2 1.8
4 7 2.4
5 8.8 3
6 10.5 3.6
8 14 4.8
DIN 661 – Countersunk Head Rivets Specifications
d1 d2 k
2 3.5 1
3 5.2 1.4
4 7 2
5 8.8 2.5
6 10.5 3
8 14 4

TECHNICAL REFERENCE

Machine Screw Specifications

Dimensional tables transcribed from the supplied machine-screw document. All measurements are in millimetres (mm) where marked; verify head style, thread and length against the drawing before order.

Machine screw, tapping screw & socket screw tables

DIN 84 – Slotted Cheese Head Machine Screws Specifications

Catalogue reference range: M1.6 to M10

d1 t n k d2
M2 0.6 0.5 1.3 3.8
M2.5 0.7 0.6 1.6 4.5
M3 0.85 0.8 2 5.5
M3.5 1 1 2.4 6
M4 1.1 1.2 2.6 7
M5 1.3 1.2 3.3 8.5
M6 1.6 1.6 3.9 10
M8 2 2 5 13
M10 2.4 2.5 6 16
 
DIN 85 – Slotted Pan Head Machine Screws Specifications

Catalogue reference range: M3 to M8

d1 t n k d2
M3 0.7 0.8 1.8 6
M4 1 1.2 2.4 8
M5 1.2 1.2 3 10
M6 1.4 1.6 3.6 12
M8 1.9 2 4.8 16
DIN 96 – Slotted Round Head Wood Screws Specifications
d d1 k n t max.
M2 4 1.4 0.5 0.9
M2.5 5 1.7 0.6 1.1
M3 6 2.1 0.8 1.35
M3.5 7 2.4 0.8 1.6
M4 8 2.8 1 1.8
M4.5 9 3.1 1 2
M5 10 3.5 1.2 2.3
M5.5 11 3.8 1.2 2.5
M6 12 4.2 1.6 2.7
M7 14 4.9 2 3.2
M8 16 5.6 2 3.6
DIN 97 – Slotted Flat Head Wood Screws Specifications

Catalogue reference range: No.6 to No.14

d1 d2 k max. n t max.
M2 3.8 1.2 0.5 0.6
M2.5 4.7 1.5 0.6 0.7
M3 5.6 1.65 0.8 0.85
M3.5 6.5 1.93 0.8 1
M4 7.5 2.2 1 1.1
M4.5 8.3 2.35 1 1.2
M5 9.2 2.5 1.2 1.3
M5.5 10.2 2.75 1.2 1.4
M6 11 3 1.6 1.6
M7 12.5 3.5 2 1.9
M8 14.5 4 2 2.1
DIN 571 – Hexagon Lag Screws Specifications

Catalogue reference range: M6 to M24

d1 s e k
M5 8 8.63 3.5
M6 10 10.89 4
M8 13 14.20 5.5
M10 17 18.72 7
M12 19 20.88 8
M16 24 26.17 10
M20 30 33.53 12
M22 32 35.72 14
M24 36 39.98 15
M27 41 45.20 17
M30 46 50.85 18.7
M33 50 55.37 21
M36 55 60.79 22.5
 
DIN 963 – Slotted Flat Head Machine Screws Specifications

Catalogue reference range: M1.6 to M16

d1 d2 k max. n t min.
M1.6 3 0.96 0.4 0.32
M2 3.8 1.2 0.5 0.4
M2.3 4.5 1.3 0.6 0.4
M2.5 4.7 1.5 0.6 0.5
M2.6 5 1.5 0.6 0.5
M3 5.6 1.65 0.8 0.6
M3.5 6.5 1.93 0.8 0.7
M4 7.5 2.2 1 0.8
M5 9.2 2.5 1.2 1
M6 11 3 1.6 1.2
M8 14.5 4 2 1.6
M10 18 5 2.5 2
M12 22 6 3 2.4
M16 29 8 4 3.2
DIN 965 – Philips Flat Head CSK Machine Screws Specifications

Catalogue reference range: M1.6 to M10

d1 d2 k max. Phillips m approx. t Proof Load N
          min. max.  
M2 3.8 1.2 1 2.35 0.95 1.25 600
M2.5 4.7 1.5 1 2.7 1.25 1.55 990
M3 5.6 1.65 1 2.9 1.5 1.8 1560
M3.5 6.5 1.93 2 3.9 1.4 1.9 2100
M4 7.5 2.2 2 4.4 1.9 2.4 2720
M5 9.2 2.5 2 4.6 2.1 2.6 4400
M6 11 3 3 6.6 2.8 3.3 6230
M8 14.5 4 4 8.7 3.9 4.4 11400
DIN 7981 – Pan Head Self Tapping Screws Specifications

Catalogue reference range: No.2 to No.14

d1 k max d2 max m approx. Cross recess No.
2.2 1.8 4.2 2.6 H1
2.9 2.2 5.6 3 H1
3.5 2.6 6.9 4.2 H2
3.9 2.8 7.5 4.4 H2
4.2 3.05 8.2 4.6 H2
4.8 3.55 9.5 5 H2
5.5 3.95 10.8 6.5 H3
6.3 4.55 12.5 7.1 H3
8 5.25 15.8 – –
DIN 7982 – Flat CSK Self Tapping Screws, Specifications

Catalogue reference range: No.2 to No.14

d1 d2 max k max m approx. Cross Recess No.
2.2 4.3 1.3 2.5 H1
2.9 5.5 1.7 3 H1
3.5 6.8 2.1 4.2 H2
3.9 7.5 2.3 4.6 H2
4.2 8.1 2.5 4.7 H2
4.8 9.5 3 5.1 H2
5.5 10.8 3.4 6.8 H3
6.3 12.4 3.8 7.1 H3
8 15.8 4.65 – –
DIN 7985 – Pan Philips Head Machine Screws Specifications

Catalogue reference range: M1.6 to M10

d1 d2 max. k max. Phillips m approx. t min. t max.
M1.6 3.2 1.42 0 1.8 0.72 1.02
M2 4 1.72 1 2.5 1.1 1.4
M2.5 5 2.12 1 2.7 1.3 1.6
M3 6 2.52 1 3.1 1.7 2
M3.5 7 2.82 2 4.2 1.74 2.24
M4 8 3.25 2 4.6 2.04 2.54
M5 10 3.95 2 5.3 2.77 3.27
M6 12 4.75 3 6.8 3.03 3.53
M8 16 6.15 4 9 4.18 4.68
M10 20 7.68 4 10.2 5.38 5.88
DIN 7991 – Flat Socket Head Cap Screws Specifications

Catalogue reference range: M3 to M24

d1 b t s k max d2
M3 12 1.2 2 1.7 6
M4 14 1.8 2.5 2.3 8
M5 16 2.3 3 2.8 10
M6 18 2.5 4 3.3 12
M8 22 3.5 5 4.4 16
M10 26 4.4 6 5.5 20
M12 30 4.6 8 6.5 24
M16 38 5.3 10 7.5 30
M20 46 5.9 12 8.5 36
M24 54 10.3 14 14 39

TECHNICAL REFERENCE

Bolt Tightening Torque Reference

The supplied torque table specifies Stainless Steel 304 / 316 and states 65% yield stress, K factor 0.2 and a clean, burr-free thread with quality MoS₂ lubricant. The source warns that unlubricated or uncoated stainless fasteners can seize and may have a higher K factor. Treat values as reference only; confirm the fastener grade, lubrication and application.

Stainless steel hex bolts

Recommended tightening torque (Nm)
Nominal size Pitch (mm) Stress area (mm²) Class 50 (Nm) Class 70 (Nm) Class 80 (Nm)
M3 0.50 5.03 0.4 0.9 1.2
M4 0.70 8.78 1.0 2.1 2.7
M5 0.8 14.20 1.9 4.2 5.5
M6 1.00 20.10 3.3 7.1 9.4
M8 1.25 36.60 8.0 17.1 22.8
M10 1.50 58.00 15.8 33.9 45.2
M12 1.75 84.30 27.6 59.2 78.9
M14 2.00 115.00 44.0 94.2 125.6
M16 2.00 157.00 68.6 147.0 195.9
M18 2.50 192.00 94.3 202.2 269.6
M20 2.50 245.00 133.8 286.7 382.2
M22 2.50 303.00 182.0 390.0 519.9
M24 3.00 353.00 231.3 495.6 660.8
M27 3.00 459.00 338.3 725.0 966.7
M30 3.50 561.00 459.5 984.6 1312.7
M33 3.50 694.00 625.2 1339.8 1786.4
M36 4.00 817.00 802.9 1720.6 2294.1
M39 4.00 976.00 1039.1 2226.7 2969.0

TECHNICAL REFERENCE

L-Bolt Technical Data

The supplied drawing provides one example size only (M16 × 2 pitch). A separate published catalogue lists a wider reference diameter range; the actual drawing and availability must be confirmed for each enquiry.

L-bolt reference data

Example dimensional data from supplied sheet

Catalogue reference range: M5 to M24

D L C T Bend angle (deg)
M16 x 2 pitch 172 67 70 90
Stainless steel mechanical properties (source table)
Grade Tensile strength MPa (min.) Yield strength MPa (min.) Elongation in 50 mm gauge length (%) Hardness BHN (max.) Hardness RB (max.)
304 515 205 40 201 92
304L 485 170 40 201 92
316 515 205 40 217 95
316L 485 170 40 217 95
310S 515 205 40 217 95
Stainless steel chemical composition (%)
Grade C (max.) Mn (max.) P (max.) S (max.) Si (max.) Cr Ni Mo
304 0.080 2.00 0.045 0.030 0.75 18-20 8-10 —
304L 0.030 2.00 0.045 0.030 0.75 18-20 8-10 —
316 0.080 2.00 0.045 0.030 0.75 16-18 10-14 2.00-3.00
316L 0.030 2.00 0.045 0.030 0.75 16-18 10-14 2.00-3.00
310S 0.080 2.00 0.045 0.030 1.50 24-26 19-22 —

TECHNICAL REFERENCE

ASTM Bolting & Thread Reference

Selected fastener-related tables from the supplied technical reference. Values and designations are transcribed for reference; verify the current governing specification and project requirements before selection.

Bolting material, nuts, and thread data

ASTM A193 grade/material descriptions
Grade Material description
B7 Alloy steel, AISI 4140/4142 quenched and tempered
B8 Class 1 Stainless steel, AISI 304, carbide solution treated.
B8M Class 1 Stainless steel, AISI 316, carbide solution treated.
B8 Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened
B8M Class 2 Stainless steel, AISI 316, carbide solution treated, strain hardened
ASTM A193 mechanical properties
Grade Size Tensile ksi, min Yield, ksi, min Elong, %, min RA % min
B7 Up to 2-1/2 125 105 16 50
  2-5/8 – 4 115 95 16 50
  4-1/8 – 7 100 75 18 50
B8 Class 1 All 75 30 30 50
B8M Class 1 All 75 30 30 50
B8 Class 2 Up to 3/4 125 100 12 35
  7/8 – 1 115 80 15 35
  1-1/8 – 1-1/4 105 65 20 35
  1-3/8 – 1-1/2 100 50 28 45
B8M Class 2 Up to 3/4 110 95 15 45
  7/8 – 1 100 80 20 45
  1-1/8 – 1-1/4 95 65 25 45
  1-3/8 – 1-1/2 90 50 30 45
ASTM A193 recommended nuts and washers
Grade Nuts Washers
B7 A194 Grade 2H F436
B8 Class 1 A194 Grade 8 SS304
B8M Class 1 A194 Grade 8M SS316
B8 Class 2 A194 Grade 8, strain hardened SS304
B8M Class 2 A194 Grade 8M, strain hardened SS316
ASTM A194 grade identification and mechanical properties
Grade Identification Marking5 Specification Material Nominal Size, In. Tempering Temp. °F Proof Load Stress, ksi Hardness Rockwell See Note
            Min Max  
2 ASTM A194 Grade 2 Medium Carbon Steel 1/4 – 4 1000 150 159 352 1,2,3
2H ASTM A194 Grade 2H Medium Carbon Steel, Quenched and Tempered 1/4 – 4 1000 175 C24 C38 1,2
2HM ASTM A194 Grade 2HM Medium Carbon Steel, Quenched and Tempered 1/4 – 4 1000 150 159 237 1,2,3
4 ASTM A194 Grade 4 Medium Carbon Alloy Steel, Quenched and Tempered 1/4 – 4 1100 175 C24 C38 1,2
7 ASTM A194 Grade 7 Medium Carbon Alloy Steel, Quenched and Tempered 1/4 – 4 1100 175 C24 C38 1,2
7M ASTM A194 Grade 7M Medium Carbon Alloy Steel, Quenched and Tempered 1/4 – 4 1100 150 159 237 1,2,3
8 ASTM A194 Grade 8 Stainless AISI 304 1/4 – 4 – 80 126 300 4
8M ASTM A194 Grade 8M Stainless AISI 316 1/4 – 4 – 80 126 300 4
ASTM A194 nut dimensions
Nominal Size F C H Weight Per Nut
  Width Across Flats Width Across Corners Thickness  
  Basic Max Min Max Min Basic Max Min  
3/8 11/16 0.688 0.669 0.794 0.763 23/64 0.377 0.341 0.03
1/2 7/8 0.875 0.850 1.010 0.969 31/64 0.504 0.464 0.07
5/8 1-1/16 1.062 1.031 1.227 1.175 39/64 0.631 0.587 0.12
3/4 1-1/4 1.250 1.212 1.443 1.382 47/64 0.758 0.710 0.20
7/8 1-7/16 1.438 1.394 1.660 1.589 55/64 0.885 0.833 0.30
1 1-5/8 1.625 1.575 1.876 1.796 63/64 1.012 0.956 0.43
1-1/8 1-13/16 1.812 1.756 2.093 2.002 1-7/64 1.139 1.079 0.59
1-1/4 2 2.000 1.938 2.309 2.209 1-7/32 1.251 1.187 0.79
1-3/8 2-3/16 2.188 2.119 2.526 2.416 1-11/32 1.378 1.310 1.02
1-1/2 2-3/8 2.375 2.300 2.742 2.622 1-15/32 1.505 1.433 1.31
1-5/8 2-9/16 2.562 2.481 2.959 2.828 1-19/32 1.632 1.556 1.62
1-3/4 2-3/4 2.750 2.662 3.175 3.035 1-23/32 1.759 1.679 2.04
1-7/8 2-15/16 2.938 2.844 3.392 3.242 1-27/32 1.886 1.802 2.41
2 3-1/8 3.125 3.025 3.608 3.449 1-31/32 2.013 1.925 2.99
2-1/4 3-1/2 3.500 3.388 4.041 3.862 2-13/64 2.251 2.155 4.19
2-1/2 3-7/8 3.875 3.750 4.474 4.275 2-29/64 2.505 2.401 5.64
2-3/4 4-1/4 4.250 4.112 4.907 4.688 2-45/64 2.759 2.647 7.38
3 4-5/8 4.625 4.475 5.340 5.102 2-61/64 3.013 2.893 9.50
3-1/4 5 5.000 4.838 5.774 5.515 3-3/16 3.252 3.124 11.94
3-1/2 5-3/8 5.375 5.200 6.207 5.928 3-7/16 3.506 3.370 15.26
3-3/4 5-3/4 5.750 5.562 6.640 6.341 3-11/16 3.760 3.616 18.12
4 6-1/8 6.125 5.925 7.073 6.755 3-15/16 4.014 3.862 21.80
ASTM A320 mechanical properties
Grade Size Tensile,ksi, min Yield,ksi, min Charpy Impact20-ft-lbf@ temp Elong,%, min RA, %, min
L7 Up to 21/2 125 105 -150° F 16 50
L43 Up to 4 125 105 -150° F 16 50
B8Class 1 All 75 30 N/A 30 50
B8MClass 1 All 75 30 N/A 30 50
B8Class 2 Up to 3/4 125 100 N/A 12 35
  7/8 – 1 115 80 N/A 15 35
  11/8 – 11/4 105 65 N/A 20 35
  13/8 – 11/2 100 50 N/A 28 45
B8MClass 2 Up to 3/4 110 95 N/A 15 45
  7/8 – 1 100 80 N/A 20 45
  11/8 – 11/4 95 65 N/A 25 45
  13/8 – 11/2 90 50 N/A 30 45
ASTM A320 recommended nuts and washers
Grade Nuts Washers
L7 A194 Grade 4 or 7 F436
L43 A194 Grade 4 or 7 F436
B8 Class 1 A194 Grade 8 SS304
B8M Class 1 A194 Grade 8M SS316
B8 Class 2 A194 Grade 8, strain hardened SS304
B8M Class 2 A194 Grade 8M, strain hardened SS316
Standard thread pitches (UNC, UNF and 8-UN)
Coarse Thread Series – UNC Fine Thread Series – UNF 8-Thread Series – 8UN
Nominal Size and Threads Per In. Basic Pitch Dia. Section at Minor Dia. Tensile Stress Area Nominal Size and Threads Per In. Basic Pitch Dia. Section at Minor Dia. Tensile Stress Area Nominal Size and Threads Per In. Basic Pitch Dia. Section at Minor Dia. Tensile Stress Area
  In. Sq in. Sq in.   In. Sq in. Sq in.   In. Sq in. Sq in.
— — — — — 0 – 80 0.0519 0.00151 0.00180 — — — — —
1 – 64 0.0629 0.00218 0.00263 1 – 72 0.0640 0.00237 0.00278        
2 – 56 0.0744 0.00310 0.00370 2 – 64 0.0759 0.00339 0.00394        
3 – 48 0.0855 0.00406 0.00487 3 – 56 0.0874 0.00451 0.00523        
4 – 40 0.0958 0.00496 0.00604 4 – 48 0.0985 0.00566 0.00661 — — — — —
5 – 40 0.1088 0.00672 0.00796 5 – 44 0.1102 0.00716 0.00830        
6 – 32 0.1177 0.00745 0.00909 6 – 40 0.1218 0.00874 0.01015        
8 – 32 0.1437 0.01196 0.0140 8 – 36 0.1460 0.01285 0.01474        
10 – 24 0.1629 0.01450 0.0175 10 – 32 0.1697 0.0175 0.0200 — — — — —
12 – 24 0.1889 0.0206 0.0242 12 – 28 0.1928 0.0226 0.0258 — — — — —
1/4 – 20 0.2175 0.0269 0.0318 1/4 – 28 0.2268 0.0326 0.0364 — — — — —
5/16 – 18 0.2764 0.0454 0.0524 5/16 – 24 0.2854 0.0524 0.0580 — — — — —
3/8 – 16 0.3344 0.0678 0.0775 3/8 – 24 0.3479 0.0809 0.0878 — — — — —
7/16 – 14 0.3911 0.0933 0.1063 7/16 – 20 0.4050 0.1090 0.1187 — — — — —
1/2 – 13 0.4500 0.1257 0.1419 1/2 – 20 0.4675 0.1486 0.1599 — — — — —
9/16 – 12 0.5084 0.162 0.182 9/16 – 18 0.5264 0.189 0.203 — — — — —
5/8 – 11 0.5660 0.202 0.226 5/8 – 18 0.5889 0.240 0.256 — — — — —
3/4 – 10 0.6850 0.302 0.334 3/4 – 16 0.7094 0.351 0.373 — — — — —
7/8 – 9 0.8028 0.419 0.462 7/8 – 14 0.8286 0.180 0.509 — — — — —
1 – 8 0.9188 0.551 0.606 1 – 12 0.9459 0.625 0.663 1 – 8 0.9188 0.551 0.606
1-1/8 – 7 1.0322 0.693 0.763 1-1/8 – 12 1.0709 0.812 0.856 1-1/8 – 8 1.0438 0.728 0.790
1-1/4 – 7 1.1572 0.890 0.969 1-1/4 – 12 1.1959 1.024 1.073 1-1/4 – 8 1.1688 0.929 1.000
1-3/8 – 6 1.2667 1.054 1.155 1-3/8 – 12 1.3209 1.260 1.315 1-3/8 – 8 1.2938 1.155 1.233
1-1/2 – 6 1.3917 1.294 1.405 1-1/2 – 12 1.4459 1.521 1.581 1-1/2 – 8 1.4188 1.405 1.492
— — — — — — — — — — 1-5/8 – 8 1.5438 1.68 1.78
1-3/4 – 5 1.6201 1.74 1.90 — — — — — 1-3/4 – 8 1.6688 1.98 2.08
— — — — — — — — — — 1-7/8 – 8 1.7938 2.30 2.41
2 – 4-1/2 1.8557 2.30 2.50 — — — — — 2 – 8 1.9188 2.65 2.77
2-¼ – 4-½ 2.1057 3.02 3.25 — — — — — 2-1/4 – 8 2.1688 3.42 3.56
2-1/2 – 4 2.3376 3.72 4.00 — — — — — 2-1/2 – 8 2.4188 4.29 4.44
2-3/4 – 4 2.5876 4.62 4.93 — — — — — 2-3/4 – 8 2.6688 5.26 5.43
3 – 4 2.8376 5.62 5.97 — — — — — 3 – 8 2.9188 6.32 6.51
3-1/4 – 4 3.0876 6.72 7.10 — — — — — 3-1/4 – 8 3.1688 7.49 7.69
3-1/2 – 4 3.3376 7.92 8.33 — — — — — 3-1/2 – 8 3.4188 8.75 8.96
3-3/4 – 4 3.5876 9.21 9.66 — — — — — 3-3/4 – 8 3.6688 10.11 10.34
4 – 4 3.8376 10.61 11.08 — — — — — 4 – 8 3.9188 11.57 11.81

TECHNICAL REFERENCE

ASTM A193 Grade List

Grade designations transcribed from the supplied ASTM A193 material reference. This list does not represent a confirmed Shri Parvati product or stock range.

Grade designations

Designations named in the supplied reference
Grade / designation as listed
ASTM A193 / ASTM A193M Grade B5 (AISI 501)
ASTM A193 / ASTM A193M Grade B6, B6X (AISI 410)
ASTM A193 / ASTM A193M Grade B7, B7M (AISI 4140, AISI 4142, AISI 4145, AISI 4140H, AISI 4142H, AISI 4145H
ASTM A193 / ASTM A193M Grade B16
ASTM A193 / ASTM A193M Grade B8, B8A (AISI 304, AISI 304L, AISI 304H)
ASTM A193 / ASTM A193M Grade B8C, B8CA (AISI 347, AISI 347H)
ASTM A193 / ASTM A193M Grade B8M, B8MA, B8M2, B8M3 (AISI 316, AISI 316L, AISI 316H)
ASTM A193 / ASTM A193M Grade B8P, B8PA (AISI 305)
ASTM A193 / ASTM A193M Grade B8N, B8NA (AISI 304N)
ASTM A193 / ASTM A193M Grade B8MN, B8MNA (AISI 316N)
ASTM A193 / ASTM A193M Grade B8MLCuN, B8MLCuNA
ASTM A193 / ASTM A193M Grade B8T, B8TA (AISI 321, AISI 321H)
ASTM A193 / ASTM A193M Grade B8A, B8RA
ASTM A193 / ASTM A193M Grade B8S, B8SA
ASTM A193 / ASTM A193M Grade B8LN, B8LNA (AISI 304N, AISI 304LN)
ASTM A193 / ASTM A193M Grade B8MLN, B8MLNA (AISI 316N, AISI 316LN)

Circlips

Product types listed for this category: external, internal and E-type circlips. No dimensional table was included in the supplied technical sheets, so please share the required size or drawing for confirmation.

Send a circlip enquiry →

Product details: Exact material/grade, diameter, length, thread, finish, standard, availability and quantity are confirmed for each enquiry. Share your specification or drawing so the requirement can be checked before quotation.

Fastener Standards in India: IS, BIS & ASTM

For industrial fasteners in India, distinguish dimensional standards from material grades and mechanical properties. Use the references below when specifying hex bolts, screws, nuts and pressure-service stud bolts.

Fastener standards reference
Standard Application Specification to confirm
IS 1364 series Hexagon head bolts, screws and nuts of product grades A and B Applicable part, product type, diameter, length and dimensional tolerances.
IS 1367 series Technical supply conditions for threaded steel fasteners Applicable part for general requirements, tolerances, mechanical properties and testing. Product grade A/B and mechanical property class are separate requirements.
ASTM A193/A193M Alloy-steel and stainless-steel bolting for high-temperature or high-pressure service Bolting grade, heat treatment, thread specification, dimensions and required test results.
ASTM A194/A194M Carbon-steel, alloy-steel and stainless-steel nuts for high-pressure or high-temperature service Nut grade, proof-load requirements and suitability for the selected bolting.
Fastener enquiry specification table
Parameter Details to include
Product & dimensions Bolt, screw, stud or nut type; nominal diameter; length; dimensional standard or approved drawing.
Thread Metric or inch thread; pitch or threads per inch; thread tolerance and threaded length.
Material & strength Material designation and property class or ASTM grade; do not substitute one grade system for another without approval.
Finish Required coating, coating thickness and any application-specific treatment.
Inspection & traceability Required dimensional inspection, mechanical tests, material test certificate and batch traceability; confirm documentation availability.
Certification & order Where applicable, request a valid BIS licence number and product scope; state standard edition, quantity and delivery requirement.

IS standards are published by the Bureau of Indian Standards (BIS). ASTM and ASME are international standards used in project specifications. A standard reference does not by itself establish BIS/ISI certification or product conformity. Specify the applicable part and edition in your enquiry; product conformity, certification scope and supply availability require confirmation against the order documentation.

Reference sources: BIS Indian Standards, ASTM A193/A193M and ASTM A194/A194M scope. Use the edition specified for your project.

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