Socket Head Cap Screws

Socket Head Cap Screws (often called Allen head bolts) are high-strength threaded fasteners featuring a cylindrical head and an internal hexagon drive. Zeron Fasteners specializes in manufacturing these screws in a vast range of materials—from standard high-tensile Alloy Steel grades (like ASTM A193 B7) for high-pressure service, to exotic Nickel Alloys (Inconel, Hastelloy) for extreme heat and corrosion. The design allows for maximum tightening torque in compact spaces, making them essential for machine tooling, die assembly, and critical joints in petrochemical and aerospace machinery.