Manufacturer Part Number: 644172PS|System Of Measurement|MetricThread Size (Inch)|Thread Size (mm)|M16x2Length Under Head (Inch)|Length Under Head (mm)|80.00Material|SteelMaterial Grade|8.8Finish Coating|Bright/UncoatedThread Standard|MetricFull or Partial Threading|Partially ThreadedLength (mm)|80.00Length (Inch)|Head Height (Inch)|Head Height (mm)|Head Height (Decimal Inch)|Standards|DIN 931; ISO 4014Length Measurement Type|Length Under HeadHex Key Size (Decimal Inch)|Hex Key Size (mm)|24.00Hex Key Size (Inch)|Additional Information|Product Service Code|UNSPSC Code|31161501