Socket Head Cap Screw Head Type Standard Material Carbon Steel Black Oxide Finish Thread Size 20 Drive Type Hex Socket Drive Size 3/8 In. Thread Type Fine Thread Style Fully Threaded Thread Direction Right Hand Length under Head 1 In. Thread Length 1 In. Head Height 1/2 In. Thread Dia 1/2 In. Head Dia 3/4 In. Temp Range - 20 Degrees F to 400 Degrees F Rockwell Hardness C37 to C45 Min Tensile Strength 180 000 psi Meets/Exceeds ASTM A574 ANSI B18.3 Package Quantity 10