Female Binding Barrel, Finish Plain, Material Stainless Steel, Barrel Head Style Flat, Barrel Drive Type Internal Hex, Thread Size 3/8 In.-16, Barrel Length 3 in, Barrel Diameter 1/2 in, Barrel Thread Depth 1/2 in, Screw Length Not Applicable, Barrel Drive Size 5/16 in, Barrel Head Diameter 7/8 in, Barrel Head Height 1/4 in, Dimensional Standards AMPG 2000 SB.07, Grip Size 2 3/4 in, Made in North America Made in North America, Material Grade/Class 18-8, Material Quality Standards ASTM A582