A2 stainless steel hexagon head set screws. Set screws are the fully threaded version of the standard bolt. Threads are standard metric coarse (most common). All set screws are high tensile grade 8.8 and meet DIN 933 Standards.
M4 - 0.7mm pitch; thread diameter 4mm; spanner size 7mm.
The Screw lengths are measured from the underside of the head. Manufactured from A2 grade stainless steel for improved corrosion resistance.