Manufacturer Part Number: MP31217|Nut Type|Hex Nut Profile|Material|SteelThread Direction|Right HandThread Size (Inch)|5/8-18Thread Size (mm)|Material Grade|SAE J995 Grade 5Finish Coating|ZincWidth Across Flats (mm)|Width Across Flats (Inch)|15/16Width Across Flats (Decimal Inch)|0.9375Thread Standard|UNFThread Fit Class|Hardness|Rockwell C32Military Specification|Does Not Meet Military SpecificationsHeight (Inch)|35/64Height (mm)|Height (Decimal Inch)|0.5469Fastener Standard|ANSI; ASME B18.2.2Width Across Points (Decimal Inch)|1.0830Width Across Points (mm)|System Of Measurement|InchAdditional Information|Product Service Code|UNSPSC Code|