Socket Screws
Socket screws are a type of fastener that need a hexagonal wrench, often referred to as an Allen key, to tighten and remove.
Manufactured from high tensile steel, the head of the socket screw is smaller than a comparably sized hex bolt.
They are often used in the building of machines and applications where strength is critical or space is at a premium.
There are several head styles available to suit differing applications, a selection are shown below:-