Drill Bit Irwin IR HSS PRO TiN DIN 338 3.5 mm, 3.5-CYL shank

Irwin IR HSS PRO TiN DIN 338 3.5 mm, 3.5-CYL shank is a high-speed steel (HSS) drill bit with a titanium nitride (TiN) coating, manufactured to DIN 338 dimensions. With a 3.5 mm diameter and a cylindrical shank, this cutting tool is designed for metalworking and general workshop applications. The TiN coating increases surface hardness and reduces friction, while the DIN 338 geometry ensures consistent point angle and flute design for reliable chip evacuation and accurate hole positioning.

Advantages

The TiN coating extends tool life by improving wear resistance and reducing heat build-up at the cutting edge. HSS core material maintains toughness to resist chipping under intermittent cutting conditions. DIN 338 geometry provides a precise 118° point angle and standard flute profile for predictable cutting performance. The cylindrical shank fits standard chucks in handheld drills and drill presses, allowing easy replacement and stable clamping during operation.

Suitable for

• Drilling through mild and alloy steels
• Workshop fabrication and maintenance
• Handheld drill and drill press operations
• Pilot holes for screws or larger drilling operations

Key specifications

• Material: high-speed steel (HSS)
• Coating: titanium nitride (TiN)
• Diameter: 3.5 mm
• Shank type: cylindrical (Cyl)
• Manufacturing standard: DIN 338 geometry
• Point angle: standard 118° geometry for general metal drilling

How to use

Select appropriate spindle speed and feed for 3.5 mm HSS drilling in the target material; lower speeds for harder alloys and higher speeds for softer steels. Secure the workpiece firmly and align the drill perpendicular to the surface to ensure straight holes. Use cutting lubricant when drilling metals to reduce heat and increase tool life. Start with a center punch for accurate positioning if required, then drill with steady pressure and withdraw occasionally to clear chips if drilling deep holes.

Usage recommendations

For best results, use a compatible cutting fluid and moderate speeds suitable for HSS with TiN coating. Inspect the drill bit for wear or chipping before each use and replace when edge deterioration affects hole quality. Store in a dry, protected case to preserve coating and prevent corrosion.