Manufacturer Part Number: Z9429|For Bolt Size|Outside Diameter|2.25inMaterial|Case Hardened SteelMinimum Thickness|Maximum Thickness|Slot Width|Slot Depth|Finish|Black OxideMaterial Grade|12L14Hardness|Standards|Bolt Size (Inch)|Finish/Coating|Black OxideInside Diameter (Decimal Inch)|0.5313Inside Diameter (Inch)|17/32Military Specification|Does Not Meet Military SpecificationsOutside Diameter (Decimal Inch)|2.2500Outside Diameter (Inch)|2-1/4Thickness (Decimal Inch)|0.3750Thickness (Inch)|3/8UNSPSC Code|