Architectural Bolt Material Brass Barrel Head Style Truss Screw Head Style Flat Thread Size 1/4 In.-20 Barrel Length 1 9/16 in Barrel Diameter 3/8 in Barrel Thread Depth 1 1/4 in Barrel Drive Type No Drive Screw Drive Style Phillips Finish Plain Barrel Head Diameter 0.563 in Barrel Head Height 5/32 in Dimensional Standards AMPG 2000 SB.01 Grip Size 1 3/4 in Includes 82 Degree Screw Made in North America Yes Pack Size Small