Professional IRWIN HSS high-speed steel drill bit with titanium nitride coating for precise metal drilling. Sharp 135° split point for easy self-centering, fast chip evacuation thanks to a ground flute, and up to 6× longer life compared to standard bits. Ideal for efficient, clean holes in metal materials.
The IRWIN HSS TiN metal drill bit, 3.5 mm diameter, is engineered for maximum productivity and long service life. The TiN (titanium nitride) coating with a hardness around 80 HRC significantly reduces friction and wear, so the bit holds its edge longer even at higher RPM. The 135° split point ensures fast starts without walking and requires less feed pressure.
Thanks to the precision-ground helix, chip removal is efficient and drilling is stable. The TiN coating allows you to increase speed by 40–60% and feed by 10–20% without a significant reduction in tool life. The low coefficient of friction reduces heat generation and energy demand; heat is better carried away into the chips and coolant.
- Precise centering: 135° tip minimizes deviation.
- Higher speed and productivity: safely increase RPM and feed.
- Long service life: up to 6× longer than typical black-oxide HSS bits.
- Clean holes in metal: optimized for rotary drilling.
- Cylindrical shank: reliable clamping in standard chucks.
Specifications
- Diameter
- 3.5 mm
- Working length
- 39 mm
- Total length
- 70 mm
- Shank
- Cylindrical
- Drilling method
- Rotary
- Drill material
- HSS (high-speed steel)
- Coating
- Titanium nitride (TiN), hardness approx. 80 HRC
- Suitable application
- Metal
- Point angle
- 135°
- Service life
- Up to 6× longer than standard HSS drills with black oxide finish
