Cap headed socket screws are useful as an alternative to a hex head bolt where there is no space for a spanner. They have a high tightening ability due to their relatively large hex key size compared to other socket screw head types. Often called cap head socket machine screws or cap head bolts, they are used in much modern machinery. They are fully threaded and conform to DIN 912 (ISO 4762).

This set contains a comprehensive selection of the most popular lengths of M4 (4mm thread) screws with a corresponding number of nuts and washers and a hexagon Allen key to fit them all together.

A2-70 stainless steel has great weather resistance and longevity. It can be used in all outdoor conditions apart from where consistent exposure to either salt water or sewerage is expected.