Fasteners

Choose workshop fasteners by thread standard, nominal diameter, material and finish. Our range includes zinc-plated steel BSW Whitworth hex nuts, sold individually in nine sizes from 3/16 inch to 3/4 inch. Match the BSW standard to your bolt or stud before selecting a size and quantity. A similar diameter or a nut that starts to engage does not establish a correct thread match. Use our imperial thread identification guide and imperial thread size chart when checking an existing fastener.