This product guide contains the specification for metric threaded coach bolts / carriage bolts when supplied with matching nut as available from Westfield Fasteners. The basis of this specification is the DIN standards DIN 603 and DIN 555.
Table 1 below defines the overall dimensions and tolerances of this screw type, whilst table 2 defines the tolerances on the shank length. Table 3 defines the detail of the accompanying nut.
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Thread, d | M5 | M6 | M8 | M10 | M12 | M16 | M20 | |
---|---|---|---|---|---|---|---|---|
thread pitch (standard metric coarse) | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | |
thread length | b min. (shank length ≤ 125mm) | 16 | 18 | 22 | 26 | 30 | 38 | 46 |
b min. (shank length > 125mm ≤ 200mm) | 22 | 24 | 28 | 32 | 36 | 44 | 52 | |
b min. (shank length > 200mm) | - | - | 41 | 45 | 49 | 57 | 65 | |
head diameter | dk max. | 13.55 | 16.55 | 20.65 | 24.65 | 30.65 | 38.80 | 46.80 |
dk min. | 12.45 | 15.45 | 19.35 | 23.35 | 29.35 | 37.20 | 45.20 | |
shank diameter | ds max. | 5 | 6 | 8 | 10 | 12 | 16 | 20 |
ds min. | 4.52 | 5.52 | 7.42 | 9.42 | 11.30 | 15.30 | 19.16 | |
neck height | fn max. | 4.10 | 4.60 | 5.60 | 6.60 | 8.75 | 12.90 | 15.90 |
fn min. | 2.90 | 3.40 | 4.40 | 5.40 | 7.25 | 11.10 | 14.10 | |
head height | k max. | 3.30 | 3.88 | 4.88 | 5.38 | 6.95 | 8.95 | 11.05 |
k min. | 2.70 | 3.12 | 4.12 | 4.65 | 6.05 | 8.05 | 9.95 | |
head radius | r1 ≈ (approx.) | 10.7 | 12.6 | 16 | 19.2 | 24.1 | 29.3 | 33.9 |
neck radius | r2 max. | 0.5 | 0.5 | 0.5 | 0.5 | 1.0 | 1.0 | 1.0 |
square neck radius | r3 max. | 0.75 | 0.90 | 1.20 | 1.50 | 1.80 | 2.40 | 3.0* |
neck thickness | vn max. | 5.48 | 6.48 | 8.58 | 10.58 | 12.70 | 16.70 | 20.84 |
vn min. | 4.52 | 5.52 | 7.42 | 9.42 | 11.30 | 15.30 | 19.16 |
total shank length | M5 | M6 | M8 | M10 | M12 | M16 | M20 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
unthreaded shank length (ls) and distance from head to first full form thread profile(lg) | ||||||||||||||||
Nom. size | min | max | ls min | lg max | ls min | lg max | ls min | lg max | ls min | lg max | ls min | lg max | ls min | lg max | ls min | lg max |
16 | 15.10 | 16.90 | - | 8 | - | 10 | / | / | / | / | / | / | / | / | / | / |
20 | 18.95 | 21.05 | - | 8 | - | 10 | - | 12 | - | 14 | / | / | / | / | / | / |
25 | 23.95 | 26.05 | - | 8 | - | 10 | - | 12 | - | 14 | / | / | / | / | / | / |
30 | 28.95 | 31.05 | - | 18 | - | 10 | - | 12 | - | 14 | - | 18 | / | / | / | / |
35 | 33.75 | 36.25 | 15 | 19 | 12 | 17 | - | 12 | - | 14 | - | 18 | / | / | / | / |
40 | 38.75 | 41.25 | 20 | 24 | 17 | 22 | 11.75 | 18 | - | 14 | - | 18 | / | / | / | / |
45 | 43.75 | 46.25 | 25 | 29 | 22 | 27 | 16.75 | 23 | 11.5 | 19 | - | 18 | / | / | / | / |
50 | 48.75 | 51.25 | 30 | 34 | 27 | 32 | 21.75 | 28 | 16.5 | 24 | - | 18 | / | / | / | / |
55 | 53.50 | 56.50 | 35 | 39 | 32 | 37 | 26.75 | 33 | 21.5 | 29 | 16.25 | 25 | - | 23 | / | / |
60 | 58.50 | 61.50 | 40 | 44 | 37 | 42 | 31.75 | 38 | 26.5 | 34 | 21.25 | 30 | - | 23 | / | / |
65 | 63.50 | 66.50 | 45 | 49 | 42 | 47 | 36.75 | 43 | 31.5 | 39 | 26.75 | 35 | 17 | 27 | / | / |
70 | 68.50 | 71.50 | 50 | 54 | 47 | 52 | 41.75 | 48 | 36.5 | 44 | 31.25 | 40 | 22 | 32 | - | 28.5 |
80 | 78.50 | 81.50 | 60 | 64 | 57 | 62 | 51.75 | 58 | 46.5 | 54 | 41.25 | 50 | 32 | 42 | 21.5 | 34 |
90 | 88.25 | 91.75 | - | - | 67 | 72 | 61.75 | 68 | 56.5 | 64 | 51.25 | 60 | 42 | 52 | 31.5 | 44 |
100 | 98.25 | 101.75 | - | - | 77 | 82 | 71.75 | 78 | 66.5 | 74 | 61.25 | 70 | 52 | 62 | 41.5 | 54 |
110 | 108.25 | 111.75 | - | - | 87 | 92 | 81.75 | 88 | 76.5 | 84 | 71.25 | 80 | 62 | 72 | 51.5 | 64 |
120 | 118.25 | 121.75 | - | - | 97 | 102 | 91.75 | 98 | 86.5 | 94 | 81.25 | 90 | 72 | 82 | 61.5 | 74 |
130 | 128.00 | 132.00 | - | - | 101 | 106 | 95.75 | 102 | 90.5 | 98 | 85.25 | 94 | 76 | 86 | 65.5 | 78 |
140 | 138.00 | 142.00 | - | - | 111 | 116 | 105.75 | 112 | 100.5 | 108 | 95.25 | 104 | 86 | 96 | 75.5 | 88 |
150 | 148.00 | 152.00 | - | - | 121 | 126 | 115.75 | 122 | 110.5 | 118 | 105.25 | 114 | 96 | 106 | 85.5 | 98 |
160 | 156.00 | 164.00 | - | - | - | - | - | - | 120.5 | 128 | 115.25 | 124 | 106 | 116 | 95.5 | 108 |
180 | 176.00 | 184.00 | - | - | - | - | - | - | 140.5 | 148 | 135.25 | 144 | 126 | 136 | 115.5 | 128 |
200 | 195.40 | 204.60 | - | - | - | - | - | - | 160.5 | 168 | 155.25 | 164 | 146 | 156 | 135.5 | 148 |
Thread, d | M5 | M6 | M8 | M10 | M12 | M16 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 | M42 | M45 | M48 | M52 | M56 | M60 | M64 | M72X6 | M80X6 | M90X6 | M100X6 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
p | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 4.5 | 5 | 5 | 5.5 | 6 | 6 | - | - | - | - | |
dw | min | 6.7 | 8.7 | 11.5 | 15.5 | 17.2 | 22 | 27.7 | 29.5 | 33.2 | 38 | 42.7 | 46.5 | 51.1 | 55.9 | 59.9 | 64.7 | 69.4 | 74.2 | 78.7 | 83.4 | 88.2 | 97.7 | 107.2 | 121.1 | 135.4 |
e | min | 8.63 | 10.89 | 14.2 | 18.72 | 20.88 | 26.17 | 32.95 | 35.05 | 39.55 | 45.20 | 50.85 | 55.37 | 60.79 | 66.44 | 71.30 | 76.95 | 82.6 | 88.25 | 93.56 | 99.23 | 104.86 | 116.16 | 127.46 | 144.08 | 161.02 |
m | nom | 4 | 5 | 6.5 | 8 | 10 | 13 | 16 | 18 | 19 | 22 | 24 | 26 | 29 | 31 | 34 | 36 | 38 | 42 | 45 | 48 | 51 | 58 | 64 | 72 | 80 |
max | 4.6 | 5.6 | 7.25 | 8.75 | 10.75 | 13.9 | 16.9 | 18.9 | 20.05 | 23.05 | 25.05 | 27.05 | 30.05 | 32.25 | 35.25 | 37.25 | 39.25 | 43.25 | 46.25 | 49.25 | 52.50 | 59.50 | 65.50 | 73.50 | 81.50 | |
min | 3.4 | 4.4 | 5.75 | 7.25 | 9.25 | 12.1 | 15.1 | 17.1 | 17.95 | 20.95 | 22.95 | 24.95 | 27.95 | 29.75 | 32.75 | 34.75 | 36.75 | 40.75 | 43.75 | 46.75 | 49.50 | 56.50 | 62.50 | 70.50 | 78.50 | |
s | max=nom | 8 | 10 | 13 | 17 | 19 | 24 | 30 | 32 | 36 | 41 | 46 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 105 | 115 | 130 | 145 |
min | 7.64 | 9.64 | 12.57 | 16.57 | 18.48 | 23.16 | 29.16 | 31 | 35 | 40 | 45 | 49 | 53.8 | 58.8 | 63.1 | 68.1 | 73.1 | 78.1 | 82.8 | 87.8 | 92.8 | 102.8 | 112.8 | 127.5 | 142.5 |