Manufacturer Part Number: CAI203103000-05|Thread Size|5/16-18Thread Length (Inch)|Thread Length (mm)|Thread Length (Decimal Inch)|Thread Standard|UNCNeck Type|SquareMaterial|SteelMaterial Grade|2Finish|ZincThread Style|Neck Diameter (Decimal Inch)|Hardness|Standards|ASTM A307Full or Partial Threading|Length Measurement Type|Length Under HeadAdditional Information|Fastener Standard|ASTM A307Package Quantity|System Of Measurement|InchFinish Coating|ZincLength (mm)|Length (Inch)|3Product Service Code|UNSPSC Code|31161603