M12 x 1.75 x 30mm Socket Cap Screw - Steel - Black Oxide - DIN 125B - Class 12.9 - Pkg of 50, Titan Fasteners, Mfr#: CDC12030

socket head cap screws are ideal for precision work with close tolerances and applications needing a well tooled appearance. Allen/hex keys are used to drive the screw.socket head cap screws supply greater tensile strength than equivalent hex head caps screws, while requiring less surface area to counterbore.