Item Specifications UPC 842176128061 Package Quantity 50 Size 5/16"-18 Drive Style External Hex Drive Size 1/2" Inch / Metric Inch Thread Size 5/16"-18 Thread Class Class 2B Coarse / Fine Coarse Threads Per Inch (TPI) 18 Height 0.281" Material Stainless Steel 18-8 Finish Plain Item Type Nuts Nut Type Flange Nut Product Code 5150-24570 SKU 3SNFG905C