Product Details: Manufacturer Part Number: C54471|Tap Type|StandardThread Size (Inch)|1/4-28Overall Length (Decimal Inch)|2.5000Overall Length (mm)|63.50Thread Size (mm)|Thread Standard|UNFChamfer|BottomingMaterial|High Speed SteelCoating/Finish|Bright/UncoatedThread Direction|Right HandCoolant Through|NoClass Of Fit|3BThread Limit|H3Number Of Flutes|4Oversize|NoThreads per Inch|28Thread Pitch (Decimal Inch)|Thread Pitch (mm)|Thread Pitch (Inch)|75% Thread Drill Size|Thread Length (Decimal Inch)|0.6300Thread Length (Inch)|Thread Length (mm)|25.40Material Grade|Overall Length (Inch)|2-1/2Thread Depth (mm)|Thread Depth (Decimal Inch)|Amount Oversize (Decimal Inch)|Application|Blind Hole Threading; Through-Hole ThreadingShank Diameter (mm)|6.48Shank Diameter (Decimal Inch)|0.2550Tapping Depth (mm)|Tapping Depth (Decimal Inch)|Square Length (mm)|7.94Square Length (Decimal Inch)|0.3125Square Length (Inch)|5/16Square Size (mm)|4.85Square Size (Decimal Inch)|0.1910Material 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|