Irwin 10502547 HSS Cobalt Drill Bit 4.0mm x 75mm

The Irwin HSS Cobalt Drill Bit is designed for drilling into tough materials such as stainless steel and high alloys. It features a robust HSS body with 5% cobalt to improve red hardness and extend service life. The bit has a 4 mm diameter, a 43 mm working length, and a total length of 75 mm. A 135° split point aids centering and reduces drilling pressure, while an industrial-grade flute supports accurate drilling and fast chip removal. The golden tempered finish provides rust and corrosion resistance. The drill bit is compatible with standard drill chucks and can be used with electric drills and drill presses. Provision is made for secure installation in the chuck and appropriate speed settings for metal drilling, with recommendations to use cutting fluid and steady pressure during operation and to wear suitable safety equipment.

Technical specifications

• Diameter: 4 mm
• Overall length: 75 mm
• Working length: 43 mm
• Material: HSS with 5% cobalt
• Point: 135° split point
• Finish: golden tempered surface resists rust and corrosion

Use appropriate safety equipment. Insert the drill bit into the chuck and tighten securely. Set the drill to the appropriate speed for metal drilling. Apply steady pressure and use cutting fluid or lubricant when drilling metals.