Otherwise known as UNEF Unified National Extra Fine.
UNEF (Unified Extra Fine) is the same as UNF except that the number of a threadsper inches is even higher for each fastener size.
New stock In 2021 we were lucky enough to purchase 8 tonnes of British steel fasteners. Approached by a farmer’s family in Cheshire, and
We are often asked what size hex Allen key wrench will fit a certain socket screw. Below is a conversion chart to help: Metric Socket