This product guide contains the specification for metric threaded hex head bolts, a series of standard parts available from Westfield Fasteners. The basis of this specification is the internationally recognised DIN standard DIN 931.
Thread, d | M1.6 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | M12 | M16 | M20 | M24 | M30 | M36 | M42 | M48 | M56 | M64 | |||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
p | 0.35 | 0.4 | 0.45 | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | |||
b ref | for shank length ≤ 125 | 9 | 10 | 11 | 12 | 14 | 16 | 18 | 22 | 26 | 30 | 38 | 46 | 54 | 66 | 78 | 90 | 102 | - | - | ||
for shank length > 125 and ≤ 200 | - | - | - | - | - | 22 | 24 | 28 | 32 | 36 | 44 | 52 | 60 | 72 | 84 | 96 | 108 | 124 | 140 | |||
for shank length > 200 | - | - | - | - | - | - | - | - | 45 | 49 | 57 | 65 | 73 | 85 | 97 | 109 | 121 | 137 | 153 | |||
c | max | 0.25 | 0.25 | 0.25 | 0.40 | 0.40 | 0.50 | 0.50 | 0.60 | 0.60 | 0.60 | 0.80 | 0.80 | 0.8 | 0.8 | 0.8 | 1 | 1 | 1 | 1 | ||
min | 0.10 | 0.10 | 0.10 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | - | - | |||
da | max | 2.0 | 2.6 | 3.1 | 3.6 | 4.7 | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 17.7 | 22.4 | 26.4 | 33.4 | 39.4 | 45.6 | 52.6 | 63 | 71 | ||
ds | - | nom = max | 1.6 | 2 | 2 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 16 | 20 | 24 | 30 | 36 | 42 | 48 | 56 | 64 | |
Product grade | A | min | 1.46 | 1.86 | 2.36 | 2.86 | 3.82 | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 15.73 | 19.67 | 23.67 | - | - | - | - | - | - | |
B | - | - | - | - | - | - | - | - | - | - | 15.57 | 19.48 | 23.48 | 29.48 | 35.38 | 41.61 | 47.38 | 55.26 | 63.26 | |||
dw | Product grade | A | min | 2.4 | 3.2 | 4.1 | 4.6 | 5.9 | 6.9 | 8.9 | 11.63 | 14.63 | 16.63 | 22.49 | 28.19 | 33.6 | - | - | - | - | - | - |
B | - | - | - | - | - | - | - | - | - | - | 22.00 | 27.70 | 33.2 | 42.7 | 51.1 | 60.6 | 69.4 | 78.7 | 88.2 | |||
e | Product grade | A | min | 3.41 | 4.32 | 5.45 | 6.01 | 7.66 | 8.79 | 11.05 | 14.38 | 118.9 | 21.1 | 26.75 | 33.53 | 39.98 | - | - | - | - | - | - |
B | - | - | - | - | - | - | - | - | - | - | 26.17 | 32.95 | 39.55 | 50.85 | 60.79 | 71.30 | 82.60 | 93.56 | 104.86 | |||
k | nom | 1.1 | 1.4 | 1.7 | 2 | 2.8 | 3.5 | 4 | 5.3 | 6.4 | 7.5 | 10 | 12.5 | 15 | 18.7 | 22.5 | 26 | 30 | 35 | 40 | ||
Product grade | A | max | 1.22 | 1.52 | 1.82 | 2.12 | 2.92 | 3.65 | 4.15 | 5.45 | 6.58 | 7.68 | 10.18 | 12.72 | 15.22 | - | - | - | - | - | - | |
min | 0.98 | 1.28 | 1.58 | 1.88 | 2.68 | 3.35 | 3.85 | 5.15 | 6.22 | 7.32 | 9.82 | 12.28 | 14.78 | - | - | - | - | - | - | |||
B | max | - | - | - | - | - | - | - | - | - | - | 10.29 | 12.85 | 15.35 | 19.12 | 22.92 | 26.42 | 30.42 | 35.5 | 40.5 | ||
min | - | - | - | - | - | - | - | - | - | - | 9.71 | 12.15 | 14.65 | 18.28 | 22.08 | 25.58 | 29.58 | 34.5 | 39.5 | |||
kw | - | - | min | 0.7 | 0.9 | 1.1 | 1.3 | 1.9 | 2.28 | 2.63 | 3.54 | 4.28 | 5.05 | 6.8 | 8.5 | 10.3 | 12.8 | 15.5 | 17.9 | 20.9 | 24.2 | 27.6 |
r | min | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 | 0.6 | 0.6 | 0.8 | 0.8 | 1 | 1 | 1.2 | 1.6 | 2 | 2 | ||
s | - | nom = max | 3.2 | 4 | 5 | 5.5 | 7 | 8 | 10 | 13 | 17 | 19 | 24 | 30 | 36 | 46 | 55 | 65 | 75 | 85 | 95 | |
Product grade | A | min | 3.02 | 3.82 | 4.82 | 5.32 | 6.78 | 7.78 | 9.78 | 12.73 | 16.73 | 18.67 | 23.67 | 29.67 | 35.38 | - | - | - | - | - | - | |
B | - | - | - | - | - | - | - | - | - | - | 23.16 | 29.16 | 35 | 45 | 53.8 | 63.1 | 73.1 | 82.8 | 92.8 |
Thread, d | M3.5 | M7 | M14 | M18 | M22 | M27 | M33 | M39 | M45 | M52 | M60 | |||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
p | 0.6 | 1 | 2 | 2.5 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | |||
b ref | for shank length ≤ 125 | 13 | 20 | 34 | 42 | 50 | 60 | 72 | 84 | 96 | - | - | ||
for shank length > 125 and ≤ 200 | - | 26 | 40 | 48 | 56 | 66 | 78 | 90 | 102 | 116 | 132 | |||
for shank length > 200 | - | - | 53 | 61 | 69 | 79 | 91 | 103 | 115 | 129 | 145 | |||
c | max | 0.4 | 0.5 | 0.6 | 0.8 | 0.8 | 0.8 | 0.8 | 1 | 1 | 1 | 1 | ||
min | 0.15 | 0.15 | 0.15 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.3 | 0.3 | |||
da | max | 4.1 | 7.8 | 15.7 | 20.2 | 24.4 | 30.4 | 36.4 | 42.4 | 48.6 | 56.6 | 67 | ||
ds | - | nom = max | 3.5 | 7 | 14 | 18 | 22 | 27 | 33 | 39 | 45 | 52 | 60 | |
Product grade | A | min | 3.32 | 6.78 | 13.73 | 17.73 | 21.67 | - | - | - | - | - | - | |
B | - | - | - | 17.57 | 21.48 | 26.48 | 32.38 | 38.38 | 44.38 | 51.26 | 59.26 | |||
dw | Product grade | A | min | 5.1 | 9.6 | 20.5 | 25.3 | 30 | - | - | - | - | - | - |
B | - | - | - | 24.8 | 29.5 | 38 | 46.6 | 55.9 | 64.7 | 74.2 | 83.4 | |||
e | Product grade | A | min | 6.58 | 12.12 | 24.49 | 30.14 | 35.72 | - | - | - | - | - | - |
B | - | - | - | 29.56 | 35.03 | 45.2 | 55.37 | 66.44 | 76.95 | 88.25 | 99.21 | |||
k | nom | 2.4 | 4.8 | 8.8 | 11.5 | 14 | 17 | 21 | 25 | 28 | 33 | 38 | ||
Product grade | A | max | 2.52 | 4.95 | 8.98 | 11.72 | 14.22 | - | - | - | - | - | - | |
min | 2.28 | 4.65 | 8.62 | 11.28 | 13.78 | - | - | - | - | - | - | |||
B | max | - | - | - | 11.85 | 14.35 | 17.35 | 21.42 | 25.42 | 28.42 | 33.5 | 38.50 | ||
min | - | - | - | 11.15 | 13.65 | 16.65 | 20.58 | 24.58 | 27.58 | 32.5 | 37.50 | |||
kw | - | - | min | 1.6 | 3.19 | 5.96 | 7.8 | 9.6 | 11.7 | 14.4 | 17.2 | 19.3 | 22.8 | 26.2 |
r | min | 0.1 | 0.25 | 0.6 | 0.6 | 0.8 | 1 | 1 | 1 | 1.2 | 1.6 | 2 | ||
s | - | nom = max | 6 | 11 | 22 | 27 | 32 | 41 | 50 | 60 | 70 | 80 | 90 | |
Product grade | A | min | 5.82 | 10.73 | 21.67 | 26.67 | 31.61 | - | - | - | - | - | - | |
B | - | - | - | 26.16 | 31 | 40 | 49 | 58.8 | 68.1 | 78.1 | 87.8 |
Thread | Product Grade +/- (mm) | |
---|---|---|
mm | A | B |
12-18 | 0.35 | - |
20-30 | 0.42 | - |
35-50 | 0.5 | - |
55-80 | 0.6 | - |
85-120 | 0.7 | 1.75 |
130-180 | 0.8 | 2 |
190-200 | 0.92 | 2.3 |
200-240 | - | 2.3 |
260-300 | - | 2.6 |
320-400 | - | 2.85 |
420-500 | - | 3.15 |