Drill Bit Irwin IR HSS PRO TiN DIN 338, Ø5.0 mm, 118° point, HSS-Co high-speed steel

Solid HSS drill bit Irwin IR HSS PRO TiN DIN 338, Ø5.0 mm, is a general-purpose metalworking tool engineered for drilling steel and other metals. The bit is manufactured to DIN 338 dimensions with a 118° point angle and a titanium nitride (TiN) coating that reduces friction and increases surface hardness. Its material composition and geometry make it compatible with hand drills and drill presses, offering consistent hole quality for fabrication, maintenance and repair work.

Advantages

The TiN coating improves wear resistance and helps maintain cutting performance over longer service intervals compared with uncoated HSS bits. The 118° point provides a balance between fast penetration and good centring on metal surfaces, while the DIN 338 profile ensures standardised shank and flute geometry for reliable fit and chip evacuation. High-speed steel construction gives heat resistance and toughness suitable for intermittent drilling in a variety of ferrous and non-ferrous metals.

Suitable for

• Drilling through mild and medium carbon steels
• Creating holes in stainless steel (with appropriate feed and speed)
• Metal fabrication, maintenance and repair tasks
• Use in hand-held drills and bench drill presses

Key specifications

• Diameter: 5.0 mm
• Material: high-speed steel (HSS)
• Coating: titanium nitride (TiN)
• Point angle: 118°
• Standard: DIN 338

How to use

Select appropriate cutting speed and feed for the workpiece material and secure the workpiece firmly before drilling. Use cutting fluid when drilling steels to reduce heat build-up and extend tool life. Start with a centre punch or pilot to improve position accuracy if required, then run the drill at steady speed without excessive side load. Retract occasionally to clear chips when drilling deeper holes, and inspect the drill bit for wear; replace when the cutting edge becomes dull or coated with workpiece material.

Usage recommendations

For best results, match drilling speed to material hardness (lower RPM for stainless steels), apply light pressure and use a suitable coolant. Store the drill bit in a dry, protected case to preserve the TiN coating and prevent edge damage.