BS 7419 Holding down bolts - Basic dimensions

BS 7419 Holding down bolts – Basic dimensions

Dimensions from most preferred sizes

Dimensions (d) M16 M20 M24 M30 M36
b 116-122 120-127.5 124-133 130-140.5 136-148
ds 15.3-16.7 19.16-20.84 23.16-24.84 29.16-30.84 35-37
k
(nom)
10 12.5 15 17.7 22.5
k 9.25-10.75 11.6-13.4 14.1-15.9 17.65-19.75 21.45-23.55
s 23.16-24 29.16-30 35-36 45-46 53.8-55
f
(nom)
8 10 12 15 18
f 7.25-8.75 9.25-10.75 11.1-12.9 14.1-15.9 17.1-18.9
v 15.3-16.7 19.16-20.84 23.16-24.84 29.16-30.84 35-37

Tolerances on nominal length

Nominal length (mm) Tolerance (mm)
250 < / <= 315 +/- 5.2
315 < / <= 400 +/- 5.7
400 < / <= 500 +/- 6.3
500 < / <= 630 +/- 7
630 < / <= 800 +/- 8
800 < / <= 1000 +/- 9
1000 < / <= 1250 +/- 10.5
Dimensions in millimetres

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Whilst the information is provided in good faith, Andrews Fasteners Ltd are not under any responsibility or liability in respect of errors or information that was found to be incorrect or for any reliance the user may place on it.