Item Specifications UPC 842176192925 Package Quantity 1 Drive Style External Hex Drive Size 2-1/16" Inch / Metric Inch Thread Size 1-3/8"-6 Thread Class Class 2B Coarse / Fine Coarse Threads Per Inch (TPI) 6 Height 1-11/64" Material Steel Material Type Zinc Plated Steel Grade Grade 5 Finish Electro Zinc & Clear Specification 1 ASME : B18.2.2-2010 Proof Load 105,000 psi Core Hardness Rockwell C32 max Item Type Nuts Nut Type Hex Nut Product Code 5150-7775 SKU 848071