Screws and Fixings

A screw is a fastener, very similar to a bolt, which is most often made of metal which are commonly used to hold objects together or position objects. It is identified by its helical ridge (or male/external thread). Screws are often designed to pair with a nut (with a female/internal thread). Common types of screws include machine screws, hex cap screw, lug bolts, pan head screw, wood screws, sheet metal screws, flat head screw, oval head screw, truss head screw, head bolts and lag screw. Screws are used in a wide range of building, production and construction including wood and meatal working to hold materials together or to position objects.