Binding Post and Screw Finish Plain Material 18-8 Stainless Steel Screw Head Style Truss Screw Drive Style Tamper-Resistant Torx Thread Size 5/8 In.-11 Screw Minimum Thread Length 1 1/2 in Barrel Head Style Truss Barrel Head Diameter 1 1/8 in Barrel Head Height 3/8 in Made in North America Yes Material Quality Standards ASTM A582 Pack Size Small Resistance Properties Acid-Resistant Chemical-Resistant Corrosion-Resistant