Shoulder Screw Hex Head 24.0 M20 40.0 27.0 Black Steel

This Shoulder Screw with a hexagonal socket head features a cylindrical shoulder that separates the head from the threaded part of the screw. It's simple to tighten or loosen with an Allen wrench or hex key. Made of blackened steel, it is slightly magnetic, durable, and corrosion-resistant.