Drill for metal Irwin HSS Titanium 7.5 mm

The Irwin HSS Titanium 7.5 mm drill is a high-speed steel metalworking bit with a titanium nitride coating designed for general-purpose drilling in steel and other ferrous and non-ferrous metals. The 7.5 mm diameter gives a balance between material removal rate and hole accuracy for common workshop, maintenance and fabrication tasks. The titanium coating improves wear resistance and lowers friction compared with uncoated HSS, helping to extend tool life and maintain cutting performance across repeated holes.

Advantages

The titanium-coated HSS construction provides enhanced hardness at the cutting edge while keeping the toughness of high-speed steel, reducing chipping and edge wear. Lower friction from the coating helps reduce heat buildup during drilling, which contributes to more consistent hole dimensions and longer service life. The geometry of the flute and point is optimised for metal drilling to give accurate centring and efficient chip evacuation when used with appropriate feed and speed.

Suitable for

• Drilling holes in mild and alloy steels
• Metal fabrication and fitting work
• Maintenance, repair and overhaul (MRO) tasks
• Workshop and light production drilling with hand drills or drill presses

Key specifications

• Material of the core: high-speed steel (HSS)
• Coating: titanium nitride (TiN) for increased wear resistance
• Diameter: 7.5 mm
• Intended material: ferrous and non-ferrous metals
• Shank style: round shank suitable for standard chucks

How to use

Mark the drilling position and use a centre punch for accurate start guidance where required. Secure the workpiece to prevent movement, and select an appropriate drill speed and feed for 7.5 mm diameter in the specific metal being drilled. Use cutting fluid or oil for steel to reduce heat and improve chip flow. Start drilling with light pressure until the point centres, then increase steady feed while maintaining coolant application. Clear chips periodically and inspect the drill and hole for wear or overheating.

Usage recommendations

For best results, use this Irwin HSS Titanium 7.5 mm drill in a correctly aligned drill press or a well-controlled hand drill, apply cutting lubricant for steel, and replace the bit when wear affects hole size or surface finish. Avoid excessive speeds on hard alloys to prevent premature coating wear.