Socket Head Cap Screw Head Type Standard Material Alloy Steel Black Oxide Finish Thread Size 7 Drive Type Hex Socket Drive Size 7/8 In. Thread Type Coarse Thread Style Partially Threaded Thread Direction Right Hand Length under Head 7 In. Thread Length 3-3/4 In. Head Height 1-1/4 In. Thread Dia 1-1/4 In. Head Dia 1-7/8 In. Temp Range -65 Degrees F to 300 Degrees F Rockwell Hardness C39 Min Tensile Strength 180 000 psi