Onyx spiral flute tap, general purpose, series: 2102, imperial, UNC, 1/4-20, semi-bottoming chamfer, 3 flutes, HSS, steam oxide, class of fit: H3, right hand cutting, 0.433 in thread length, 2-1/2 in overall length, Right hand flute direction, H3 thread limit.
Features
- Reduce neck design and shorter thread length for increased coolant flow to the cutting edge, enhanced chip evacuation and reduced contact between tap and workpiece
- For tapping a wide range of materials up to 28RC hardness
- Steam oxide over nitride increases wear resistance, reduces friction, reduces galling and chip welding, improves chip flow and increases tap lubricant retention
- The spiral flutes draw the chips out of the hole
- Semi-bottoming style (2-3 thread chamfer) allows threading close to the bottom of blind holes but cuts more efficiently than standard bottoming taps due to a slightly longer chamfer which distributes the cutting load over a greater number of teeth
