The square neck locks into a square hole in a pressing so the bolt cannot turn. That is why the pressing industry uses so many of them.

ASL manufactures cup square neck bolts from M4 to M16.

Send your size and quantity.

Advance Spares Limited, Unit 21, Vauxhall Industrial Estate, Ruabon, Wrexham LL14 6HA. Tel 01978 823 900. Email sales@aslgroup.uk.com.