Product Details: Manufacturer Part Number: 30031|Slot Width|Type|T-Slot BoltSlot Width (Inch)|5/8Slot Width (Decimal Inch)|Head Height (Inch)|11/32Head Height (mm)|Head Width (Inch)|1-3/32Head Width|Length Under Head (mm)|Length Under Head (Inch)|16Material|SteelMaterial Grade|5; C1045Thread Fit Class|Class 3Finish|UncoatedThread Size (Inch)|5/8-11Thread Size (mm)|Thread Standard|UNCThread Length (Inch)|3-1/2Thread Length (mm)|Thread Length (Decimal Inch)|3.5inFastener Standard|System Of Measurement|InchProduct Service Code|UNSPSC Code|