Manufacturer Part Number: 1297900|Tap Type|Spiral FluteThread Size (mm)|Thread Size (Inch)|1/4-20Thread Standard|UNCThread Limit|H3Thread Pitch (mm)|Thread Pitch (Decimal Inch)|Thread Length (Decimal Inch)|0.645Thread Length (Inch)|1Thread Length (mm)|Thread Depth (mm)|Thread Depth (Decimal Inch)|Thread Direction|Right HandOverall Length (Inch)|4Overall Length (Decimal Inch)|4.0000Overall Length (mm)|Chamfer|BottomingMaterial|High-Speed SteelMaterial Application|Aluminum; Carbon Steel; Cast IronShank Diameter (mm)|Shank Diameter (Decimal Inch)|0.255Application|ThreadingShank Length (Inch)|Shank Length (Decimal Inch)|Shank Length (mm)|Square Size (mm)|Square Size (Decimal Inch)|0.191Reduced Shank|YesSeries|918Helix Angle|50Square Length (Inch)|Flute Direction|Right HandNeck Length (Decimal Inch)|1.0070Number Of Flutes|3Class Of Fit|3BCoating/Finish|BrightSquare Length (Decimal Inch)|0.3125Square Length (mm)|Threads per Inch|Neck Length (mm)|Product Service Code|UNSPSC Code|