M4 x 50MM SOCKET CAP SCREWS HEX HEAD ALLEN CAP BOLTS STAINLESS STEEL DIN 912. Screw Size: M4 x 50MM. Thread Size: M4. Socket Cap Head Screws (also known as Allen Bolts) present a socket to use with a Hex Key, these fasteners reassembled by using a high-precision machining procedure, allowing tolerances of ±0.13mm to be attained.
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