Drill Bit Irwin HSS Cone 20 mm – metal cutting, model 10502438

Irwin HSS Cone 20 mm is a cone-shaped high-speed steel drill bit designed for cutting and enlarging holes in metal. The 20 mm diameter and conical profile allow progressive material removal, providing a controlled hole size and improved centering compared with blunt reaming. Constructed from HSS material, this cone drill bit offers resistance to wear and maintains cutting performance under elevated temperatures typical for metal drilling tasks. It is compatible with handheld drills and drill presses used in workshops and industrial environments.

Advantages

The HSS construction gives the cone drill bit enhanced hardness and thermal stability for prolonged cutting life when working with steel and other ferrous metals. The conical geometry enables gradual cutting, reducing the risk of burrs and improving hole roundness. Its single-piece design ensures reliable concentricity and reduces vibration during operation, which helps to extend tool and machine life. The plain shank is suitable for standard drill chucks and machines.

Suitable for

• Enlarging or deburring existing holes in steel and iron
• Preparing conical entries or countersinks in metalwork
• Workshop and maintenance tasks with handheld drills
• Drill press operations where controlled hole enlargement is required

Key specifications

• Material: high-speed steel (HSS)
• Shape: cone (taper) profile
• Diameter: 20 mm
• Shank type: plain cylindrical shank for chuck mounting
• Typical applications: metal cutting, hole enlargement, deburring

How to use

Secure the workpiece and select an appropriate drill or press with a compatible chuck for the plain shank. Mark the hole center or locate the existing hole to be enlarged, and set a stable clamping arrangement to prevent movement. Use cutting fluid suitable for steel to reduce heat and improve the cutting finish; start drilling at low speed and increase as material is removed while maintaining steady pressure. Withdraw periodically to clear chips and reapply lubricant as needed. Finish the operation by deburring edges if necessary.

Usage recommendations

Use cutting fluid for prolonged tool life and improved surface finish, keep speeds moderate for steel to avoid overheating, and ensure the workpiece is firmly clamped. Inspect the cone bit for wear or damage before use and replace when cutting becomes inefficient or produces poor hole quality.