Item Specifications UPC 842176189123 Package Quantity 10 Size 5/16"-18 x 5/8" Head Style Flat Counter Sink Angle 82 Degree Head Diameter 0.597" Head Height 0.191" Drive Style Phillips Drive Size #4 Inch / Metric Inch Thread Size 5/16"-18 Thread Dia. 0.3125" Thread Class Class 2A Coarse / Fine Coarse Threads Per Inch (TPI) 18 Thread Coverage Full Thread Length 5/8" Thread Length Dec. .625" Material Brass Finish Plain Specification 1 ASME : B18.6.3 Tensile Strength 50,000 PSI Core Hardness Rockwell B50 Item Type Machine Screws Product Code 5150-16875 SKU 3RSMPF95C010