Andrews Fasteners Ltd

AndFast Malaysia SDN BHD

The Fasteners Specialist

+44 (0) 113 246 9992

BS 7419 Holding down bolts – Basic dimensions

BS 7419 Holding down bolts – Basic dimensions

Dimensions from most preferred sizes

Dimensions (d)M16M20M24M30M36
b116-122120-127.5124-133130-140.5136-148
ds15.3-16.719.16-20.8423.16-24.8429.16-30.8435-37
k (nom)1012.51517.722.5
k9.25-10.7511.6-13.414.1-15.917.65-19.7521.45-23.55
s23.16-2429.16-3035-3645-4653.8-55
f (nom)810121518
f7.25-8.759.25-10.7511.1-12.914.1-15.917.1-18.9
v15.3-16.719.16-20.8423.16-24.8429.16-30.8435-37

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