Barrel Bolt Finish Plain Material 18-8 Stainless Steel Barrel Head Style Truss Barrel Drive Type Tamper-Resistant Torx Thread Size #10-24 Barrel Length 5/8 in Barrel Diameter 1/4 in Barrel Thread Depth 1/4 in Barrel Head Diameter 7/16 in Barrel Head Height 7/64 in Grip Size 1/2 in Made in North America Yes Material Quality Standards ASTM A582 Pack Size Small