Manufacturer Part Number: CN-731|Nut Type|Button Thread CollarMaterial|SteelThread Size|5/16-18Flange Diameter (Inch)|1-1/4Flange Diameter (Decimal Inch)|Flange Diameter (mm)|Flange Height (Decimal Inch)|Flange Height|3/16Flange Height|Flange Height (mm)|Nut Height (mm)|Nut Height (Decimal Inch)|0.8100Material Grade|Thread Direction|Width Across Flats (Inch)|1-1/4Width Across Flats (mm)|Width Across Flats (Decimal Inch)|Thread Standard|Thread Fit Class|Standards|TCMAIMinimum Width Across Flats (Decimal Inch)|Maximum Width Across Flats (Decimal Inch)|Minimum Height (Decimal Inch)|Minimum Flange Diameter (Decimal Inch)|Maximum Flange Diameter (Decimal Inch)|Hardness|Fastener Standard|TCMAIWidth Across Points (mm)|System Of Measurement|InchHeight (mm)|Finish Coating|Black OxideMaximum Height (Inch)|Height (Inch)|13/16Type|Button Thread Collar NutAdditional Information|Product Service Code|UNSPSC Code|