Manufacturer Part Number: C54508|Tap Type|StandardThread Size (Inch)|5/16-18Overall Length (Decimal Inch)|2.7190Overall Length (mm)|Thread Size (mm)|Thread Standard|UNCChamfer|BottomingMaterial|High Speed SteelCoating/Finish|Bright/UncoatedThread Direction|Right HandCoolant Through|NoClass Of Fit|3BThread Limit|H3Number Of Flutes|2Oversize|NoThreads per Inch|18Thread Pitch (Decimal Inch)|Thread Pitch (mm)|Thread Pitch (Inch)|75% Thread Drill Size|Thread Length (Decimal Inch)|0.6900Thread Length (Inch)|Thread Length (mm)|Material Grade|Overall Length (Inch)|Thread Depth (mm)|Thread Depth (Decimal Inch)|Amount Oversize (Decimal Inch)|Application|Blind Hole Threading; Through-Hole ThreadingShank Diameter (mm)|8.08Shank Diameter (Decimal Inch)|0.3180Tapping Depth (mm)|Tapping Depth (Decimal Inch)|Square Length (mm)|9.52Square Length (Decimal Inch)|0.3750Square Length (Inch)|3/8Square Size (mm)|6.05Square Size (Decimal Inch)|0.2380Material Application|Alloy Steel; Aluminum; Carbon Steel; Free-Machining Stainless SteelSeries|1003Neck Length (Decimal Inch)|Neck Length|Neck Length (Inch)|Shank Length (mm)|Shank Length (Decimal Inch)|Product Service Code|UNSPSC Code|