Drill bit Irwin tungsten carbide for metal, cylindrical shank, 8 mm (10502671)

Irwin tungsten carbide drill bit for metal, cylindrical shank, 8 mm is a precision carbide-tipped twist drill designed for drilling holes in steel, stainless steel and other ferrous and non‑ferrous metals. The solid carbide tip delivers improved wear resistance and long tool life compared with standard high-speed steel drills, while the cylindrical shank ensures stable clamping in hand drills and drill presses. This 8 mm diameter drill bit is intended for workshop, maintenance and professional metalworking tasks where accurate hole size and consistent performance are required.

Advantages

The carbide tip provides superior hardness and heat resistance that reduces flank wear and maintains cutting geometry over extended use. Its spiral flute geometry evacuates chips effectively to reduce clogging and improve hole finish. The cylindrical shank offers compatibility with standard three-jaw chucks and collets, making the bit suitable for both portable drills and stationary drilling machines. The overall design balances durability and hole accuracy for repeatable results in a variety of metal materials.

Suitable for

• Drilling holes in mild and hardened steel
• Working with stainless steel and alloyed metals
• Workshop maintenance and repair tasks
• Use in hand drills and bench or pillar drilling machines

Key specifications

• Tip material: tungsten carbide
• Shank type: cylindrical (straight) shank
• Diameter: 8 mm
• Application: metal drilling (ferrous and non‑ferrous)
• Flute type: twist/spiral for chip evacuation

How to use

Select the appropriate drilling speed and feed for the metal being worked—lower speeds for stainless and hardened steels, higher speeds for softer non‑ferrous metals—while applying steady, moderate pressure. Secure the workpiece firmly in a vice or fixture to prevent movement. Use cutting fluid or coolant when drilling tougher steels to reduce heat build-up and extend tool life. Clamp the cylindrical shank properly in the drill chuck or collet to ensure concentricity and reduce runout.

Usage recommendations

For best results, pre-drill with a smaller pilot hole when working with thick or very hard materials, and maintain appropriate coolant flow during prolonged drilling sessions. Inspect the carbide tip for wear or chipping and replace the bit when cutting performance or hole quality degrades.