Drill Bit Proedge Milwaukee HSS-G 15.0 mm — metal drilling bit, single piece

The Proedge Milwaukee HSS-G 15.0 mm drill bit is a single-piece high-speed steel (HSS-G) twist drill designed for drilling metal. Engineered for workshop and professional use, this 15.0 mm diameter bit is intended to produce accurate, durable holes in steel and other ferrous materials. The ground flutes and standard-point geometry provide reliable chip evacuation and consistent penetration when used with appropriate speeds and cutting fluids.

Advantages

This HSS-G drill bit offers high hardness and wear resistance suitable for repeated metal drilling. The ground flute construction improves concentricity and reduces vibration for cleaner holes, while the robust single-piece design enhances durability under moderate to heavy use. It is compatible with a range of standard drill chucks and holds a sharp cutting edge when used with correct machining parameters.

Suitable for

• Drilling mild and medium carbon steels
• General metal fabrication and workshop maintenance
• Mechanical repair and installation tasks that require precise 15.0 mm holes
• Preparation of workpieces before tapping or counterboring

Key specifications

• Material: high-speed steel (HSS-G), ground
• Diameter: 15.0 mm
• Tip geometry: standard twist drill point for metal
• Design: single-piece construction with ground flutes
• Typical applications: drilling ferrous metals and general metalworking

How to use

Secure the drill bit in a compatible drill chuck ensuring good concentricity before starting. Select a drilling speed appropriate for high-speed steel and the workpiece material, and apply steady feed pressure. For steel and other ferrous metals, use cutting fluid or coolant to reduce heat and prolong bit life. Retract periodically to clear chips when drilling deep holes. After use, clean and store the bit in a dry place.

Usage recommendations

For best results when drilling steel, use moderate spindle speeds and a suitable cutting lubricant; avoid excessive heat buildup by pecking on deep holes and clearing chips frequently. Inspect the cutting edge before use and replace the bit if significant wear or chipping is present.