ISO Extended Spiral Flute Taps

For deep hole threading tasks, Wilson's Quality ISO Extended Spiral Fluent Taps is an ideal choice as it is manufactured in full compliance with ISO standards. Workers will find that its elongated and thickened handle makes the operation more stable and less prone to shaking. This design enables effective axial transport and discharge of chips when processing blind holes, especially when dealing with materials such as cast aluminum and low carbon steel that are prone to chip growth, thereby preventing processing interruptions caused by chip accumulation.

This product strictly follows the GB/T 968 precision standard and uses a cobalt containing high-speed steel substrate, which is particularly suitable for threading deep cavity workpieces such as automotive engine cylinder blocks. However, attention should be paid to matching specialized clamps and reducing the speed to cope with the torque risk caused by elongation.  

Comparison with straight flute taps  

Compared with straight flute taps, ISO Extended Spiral flute taps is designed with a spiral groove to achieve chip directional export, greatly reducing the risk of chip blockage and blade breakage. Compared with straight groove taps, the lifespan can be increased by 30% -50%, and even more than twice in extreme working conditions. Its elongated handle, combined with a thickened handle diameter design, enhances rigidity and reduces vibration, avoiding fracture problems caused by a large aspect ratio.

Wilson ISO Extended Spiral flute taps Parameter (Specification)