Item Specifications UPC 842176129754 Package Quantity 10 Size 5/16"-18 x 2-1/2" Head Style Flat Counter Sink Angle 82 Degree Head Diameter 0.586" Head Height 0.185" 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 2-1/2" Thread Length Dec. 2.315" Material Stainless Steel 18-8 Finish Plain Specification 1 ASME : B18.6.3 Tensile Strength 80,000 PSI Core Hardness Rockwell B80 Item Type Machine Screws Product Code 5150-16645 SKU 3SSMPF95C208