Drill bit Proline 12 mm metal Ø, model 76412, 1 piece

Proline 12 mm metal drill bit, model 76412, is a single high-speed drill designed for drilling metal surfaces. With a 12 mm nominal diameter, this bit is suitable for creating precise round holes in steel, iron and other metal materials. It fits standard three-jaw chucks of handheld drills and drill presses and is intended for workshop operations, maintenance and repair tasks requiring a reliable metal drilling tool.

Advantages

This 12 mm metal drill bit offers a consistent cutting geometry for repeatable hole quality and straightforward chip evacuation. Manufactured from high-speed steel, it provides wear resistance appropriate for common steel grades and metal alloys. The shank and flute design ensure stable running in standard chucks and reduce wobble while drilling, helping to improve hole accuracy and extend tool life.

Suitable for

• Drilling holes in mild and alloy steels
• Workshop and maintenance drilling tasks
• Use with handheld drills and drill presses
• Repair, assembly and fabrication work requiring 12 mm holes

Key specifications

• Diameter: 12 mm
• Material: high-speed steel (HSS) suitable for metal drilling
• Point geometry: standard 118°–135° range for general metal use
• Shank type: straight round shank compatible with standard chucks
• Available lengths: 400 mm and 600 mm

How to use

Secure the drill bit in a properly tightened chuck, ensuring concentric alignment. Select an appropriate drill speed and apply steady feed pressure; lower speeds are recommended for harder metals and larger diameters. Use cutting lubricant or coolant when drilling steel to reduce heat, improve chip removal and extend bit life. After drilling, clear chips from the hole and inspect the cut for burrs before any subsequent finishing or assembly steps.

Usage recommendations

For best results, match drill speed and lubrication to the metal type: lower speed with cutting oil for hard steels, moderate speed for mild steel, and ensure secure clamping of the workpiece to prevent movement. Replace the bit when wear or chipping degrades hole quality.