Selected sizes used for CE (UKCA) marked BS EN 15048 Non-preloaded structural bolting assemblies
Dimension (d) | M12 | M16 | M20 | M22 | M24 | M27 | M30 | M33 | M36 |
---|---|---|---|---|---|---|---|---|---|
Thread pitch (pa) | 1.75 | 2 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 |
m | 10.37-10.80 | 14.10-14.80 | 16.90-18.00 | 18.10-19.40 | 20.20-21.50 | 22.50-23.80 | 24.30-25.60 | 27.40-28.70 | 29.40-31.00 |
dw (min) | 16.63 | 22.49 | 27.70 | 31.35 | 33.25 | 38.00 | 42.75 | 46.55 | 51.11 |
s | 17.73-18.00 | 23.67-24.00 | 29.16-30.00 | 33.00-34.00 | 35.00-36.00 | 40.00-41.00 | 45.00-46.00 | 49.00-50.00 | 53.80-55.00 |
e (min) | 20.03 | 26.75 | 32.95 | 37.29 | 39.55 | 45.20 | 50.85 | 55.37 | 60.79 |
Dimensions in millimetres
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