Manufacturer Part Number: 31-NTU-62C|Nut Type|Heavy Hex Lock NutMaterial|Stainless SteelThread Size (Inch)|5/8-11Thread Size (mm)|Material Grade|18-8Height (Decimal Inch)|Height (mm)|Height (Inch)|39/64Width Across Flats (Decimal Inch)|1.0520 to 1.0640Width Across Flats (Inch)|1-1/16Width Across Flats (mm)|Locking Style|InsertFlange Diameter (Decimal Inch)|Thread Direction|Right HandThread Fit Class|Standards|Insert Material|NylonFastener Standard|UNCMilitary Specification|Does Not Meet Military SpecificationsWidth Across Points (Decimal Inch)|1.1910Width Across Points (mm)|System Of Measurement|InchFinish Coating|Bright/UncoatedAdditional Information|Product Service Code|UNSPSC Code|31161716