Item Specifications UPC 842176138251 Package Quantity 100 Size #4-40 x 7/8" Head Style Flat Counter Sink Angle 82 Degree Head Diameter 0.225" Head Height 0.083" Drive Style Allen Hex Key Drive Size 1/16" Inch / Metric Inch Thread Size #4-40 Thread Dia. 0.112" Thread Class Class 3A Coarse / Fine Coarse Threads Per Inch (TPI) 40 Thread Coverage Full Thread Length 7/8" Thread Length Dec. 0.792" Material Alloy Steel Grade Grade 8 Finish Black Oxide Specification 1 ASME : B18.3 Tensile Strength 120,000 PSI Core Hardness Rockwell C32 Item Type Socket Screws Product Code 5150-9650 SKU 721587