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DIN 931 - ISO 4014
We are specialist supplying for High tensile bolts and nuts in 8.8, 10.9, 12.9 grade for power, energy, renewable sector like wind power and solar energy, and also in stainless steel bolts and nuts in SS 304, SS 316, SS 316L and 316S31 grade for the marine.
Our main products:
Heavy Hex Bolt (ASTM A325/A325M type1 and type3, ASTM A490/A490M type1 and type3, EN14399-3, EN14399-4, JIS B1186(F10T), GB1228, AS1252, IS3757)
Tension Control Bolt(ASTM F1852, F2280, EN14399-10, S10T, GB3632)
Welding Stud (ISO13918, AWSD1.1 / 1.5)
Hex Bolt(DIN933 / DIN931, ISO4014 / 4017, EN15048, SAE A307, AS1110, JIS B1180 grade 4.8,8.8,10.9)
Foundation Anchor Bolt ("L","J","U","I" type with 4.8, 8.8 and 10.9 grade)
Thread Rod including Stud Bolt (DIN975 / 976, A193 B7)
DIN 931 - Bolt Dimension
![](https://www.bigboltnut.com/images/din-931-bd.jpg)
• P is the pitch of thread.
• dw, max. = actual
• β = 15⁰ to 30⁰
• Incomplete thread u = 2P
Nominal | Pitch of thread P | Width across corners e | Width across flats | Thickness of head k | Thread Length b | Transition Diameter da | Dia. of washer face dw | Diameter of unthreaded shank | Radius under head r | Depth of washer face c | Major Diameter (D) | Pitch Diameter (D1) | Minor Diameter (D2) | ||||||||
MM | Min. | Min. | Max. | Min. | Max. | Bolt | Bolt 125-200 | Bolt | Max. | Min. | Min. | Max. | Min. | Min. | Max. | Min. | Min. | Min. | Max. | Max. | |
M-16 | 2.0 | 26.17 | 23.16 | 24 | 9.71 | 10.29 | 38 | 44 | 57 | 17.70 | 22.00 | 15.57 | 16 | 0.6 | 0.2 | 0.8 | 15.68 | 15.96 | 14.50 | 14.60 | 13.80 |
M-18 | 2.5 | 29.56 | 26.16 | 27 | 11.15 | 11.85 | 42 | 48 | 61 | 20.20 | 24.85 | 17.57 | 18 | 0.6 | 0.2 | 0.8 | 17.62 | 17.96 | 16.15 | 16.25 | 15.25 |
M-20 | 2.5 | 32.95 | 29.16 | 30 | 12.15 | 12.85 | 46 | 52 | 65 | 22.40 | 27.70 | 19.48 | 20 | 0.8 | 0.2 | 0.8 | 19.62 | 19.96 | 18.15 | 18.25 | 17.25 |
M-22 | 2.5 | 37.29 | 33.00 | 34 | 13.65 | 14.35 | 50 | 56 | 69 | 24.40 | 31.35 | 21.48 | 22 | 0.8 | 0.2 | 0.8 | 21.62 | 21.96 | 20.15 | 20.25 | 19.25 |
M-24 | 3.0 | 39.55 | 35.00 | 36 | 14.65 | 15.35 | 54 | 60 | 73 | 26.40 | 33.25 | 23.48 | 24 | 0.8 | 0.2 | 0.8 | 23.58 | 23.95 | 21.80 | 21.90 | 20.70 |
M-27 | 3.0 | 45.20 | 40.00 | 41 | 16.65 | 17.35 | 60 | 66 | 79 | 30.40 | 38.00 | 26.48 | 27 | 1.0 | 0.2 | 0.8 | 26.58 | 26.95 | 24.80 | 24.90 | 23.70 |
M-30 | 3.5 | 50.85 | 45.00 | 46 | 18.18 | 19.12 | 66 | 72 | 85 | 33.40 | 42.75 | 29.48 | 30 | 1.0 | 0.2 | 0.8 | 29.52 | 29.95 | 27.50 | 27.60 | 26.16 |
M-33 | 3.5 | 55.37 | 49.00 | 50 | 20.58 | 21.42 | 72 | 78 | 91 | 36.40 | 46.55 | 32.38 | 33 | 1.0 | 0.2 | 0.8 | 32.52 | 32.95 | 30.50 | 30.60 | 29.16 |
M-36 | 4.0 | 60.79 | 53.80 | 55 | 22.08 | 22.92 | 78 | 84 | 97 | 39.40 | 51.11 | 35.38 | 36 | 1.0 | 0.2 | 0.8 | 35.46 | 35.94 | 33.15 | 33.25 | 31.61 |
M-39 | 4.0 | 66.44 | 58.80 | 60 | 24.58 | 25.42 | 84 | 90 | 103 | 42.40 | 55.86 | 38.38 | 39 | 1.0 | 0.3 | 1.0 | 38.46 | 38.94 | 36.20 | 36.30 | 34.61 |
M-42 | 4.5 | 71.30 | 63.10 | 65 | 25.58 | 26.42 | 90 | 96 | 109 | 45.60 | 59.95 | 41.38 | 42 | 1.2 | 0.3 | 1.0 | 41.44 | 41.94 | 38.80 | 38.90 | 37.07 |
M-45 | 4.5 | 76.95 | 68.10 | 70 | 27.58 | 28.42 | 96 | 102 | 115 | 48.60 | 64.70 | 44.38 | 45 | 1.2 | 0.3 | 1.0 | 44.44 | 44.94 | 41.80 | 41.90 | 40.07 |
M-48 | 5.0 | 82.60 | 73.10 | 75 | 29.58 | 30.42 | 102 | 108 | 121 | 52.60 | 69.45 | 47.38 | 48 | 1.6 | 0.3 | 1.0 | 47.40 | 47.93 | 44.50 | 44.60 | 42.52 |
M-52 | 5.0 | 88.25 | 78.10 | 80 | 32.50 | 33.50 | 110 | 116 | 129 | 56.60 | 74.20 | 51.26 | 52 | 1.6 | 0.3 | 1.0 | 51.40 | 51.93 | 48.50 | 48.60 | 46.52 |
M-56 | 5.5 | 93.56 | 82.80 | 85 | 34.50 | 35.50 | 118 | 124 | 137 | 63.00 | 78.66 | 55.26 | 56 | 2.0 | 0.3 | 1.0 | 55.36 | 55.92 | 52.10 | 52.20 | 49.97 |
M-60 | 5.5 | 99.21 | 87.80 | 90 | 37.50 | 38.50 | - | 132 | 145 | 67.00 | 83.41 | 59.26 | 60 | 2.0 | 0.3 | 1.0 | 59.36 | 59.92 | 57.85 | 57.95 | 53.97 |
M-64 | 6.0 | 104.86 | 92.80 | 95 | 39.50 | 40.50 | - | 140 | 153 | 71.00 | 88.16 | 63.26 | 64 | 2.0 | 0.3 | 1.0 | 63.32 | 63.92 | 59.80 | 59.90 | 57.42 |
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