Manufacturer Part Number: 581665BR|System Of Measurement|Head Type|Thread Size (Inch)|5/8-11Thread Size (mm)|Length Measurement Type|Length Under Head (Inch)|11Length Under Head (mm)|Length (Inch)|Length (mm)|Full or Partial Threading|Partially ThreadedDrive Type|HexMaterial|Alloy SteelFinish Coating|Black OxideThread Standard|Thread Length (Inch)|Drive Size|Drive Size (mm)|Drive Size (TXT)|1/2 inThread Style|Partially ThreadedRohs Compliant|Thread Length (Decimal Inch)|Thread Direction|Thread Length (mm)|Thread Spacing|Thread Pitch (Decimal Inch)|Thread Pitch (mm)|Thread Pitch (Inch)|Thread Fit Class|Head Diameter (Decimal Inch)|Head Diameter (mm)|Head Diameter (Inch)|Head Height (Decimal Inch)|Head Height (mm)|Hardness|Head Height|Fastener Standard|ASME/ANSI B18.3; ASTM A574Torx Drive Size|Hex Key Size (Decimal Inch)|Hex Key Size (mm)|Hex Key Size (Inch)|Material Grade|Additional Information|Head Height (Inch)|Length (Fractional Inch)|Product Service Code|UNSPSC Code|31161501