M4 Hex Head Setscrews DIN 933 (ISO 4017) in A4 Stainless Steel

The DIN 933 hex bolt, also specified under ISO 4017, is a fully threaded hexagon head fastener widely used in engineering, manufacturing and construction applications. Unlike the partially threaded DIN 931 equivalent, the DIN 933 bolt features a full-length thread for maximum engagement. The hexagon head allows high tightening torque to be applied using a standard spanner or socket, making it a versatile and reliable fastening solution. Unless otherwise stated, all products conform to DIN 933. ISO 4017 differs only in the head dimensions specified for M10, M12 and M14 thread sizes.