Item Specifications UPC 842176132181 Package Quantity 25 Size 5/16"-18 x 1-1/2" Head Style Oval Counter Sink Angle 82 Degree Head Diameter 0.597" Head Height 0.290" 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 1-1/2" Thread Length Dec. 1.21" 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 5150-18825 SKU 3SSMPO95C108