Item Specifications UPC 842176193137 Package Quantity 5 Drive Style External Hex Drive Size 1-5/16" Inch / Metric Inch Thread Size 7/8"-9 Thread Class Class 2B Coarse / Fine Coarse Threads Per Inch (TPI) 9 Height 3/4" Material Steel Material Type Zinc Yellow-Chromate Plated Steel Grade Grade 8 Finish Electro Zinc & Yellow Specification 1 ASME : B18.2.2-2010 Proof Load 150,000 psi Core Hardness Rockwell C26 - C34 Item Type Nuts Nut Type Hex Nut Product Code 5150-7960 SKU 306066