Binding Post Screw, Finish Plain, Material Stainless Steel, Screw Head Style Flat, Screw Drive Style Socket, Thread Size 1/2 In.-13, Screw Minimum Thread Length 1 in, Barrel Head Style Flat, Barrel Drive Type Internal Hex, Barrel Length Not Applicable, Barrel Drive Size 3/8 in, Barrel Head Diameter 1 in, Dimensional Standards AMPG 2000 SB.07, Made in North America Made in North America, Material Grade/Class 18-8, Material Quality Standards ASTM A582, Pack Size Small