Drill Bit GRAPHITE 8.0 mm Hex Shank for Metal, model 54T715

GRAPHITE twist drill bit, model 54T715, with an 8.0 mm cutting diameter and hex shank is designed for drilling steel and various ferrous and non-ferrous metals. The bit is intended for use in handheld drills and bench drills where a reliable cutter and stable clamping are required. The hex shank provides positive engagement with chucks and quick-change adapters, reducing slippage and improving repeatable positioning during workshop, maintenance and fabrication tasks.

Advantages

The 8.0 mm diameter offers a balance between hole accuracy and material removal rate for many metalworking applications. The hex shank design improves grip in keyless chucks and quick-change systems to minimize cam-out and rotation slippage. The geometry of the twist flutes and cutting point is optimized for metal cutting, allowing efficient chip evacuation and consistent hole quality in thin and medium-thickness metal sheets and components.

Suitable for

• Drilling steel, stainless steel and other ferrous metals
• Drilling aluminum, copper and other non-ferrous metals
• Workshop assembly, maintenance and repair tasks
• Handheld drilling and bench drill operations

Key specifications

• Cutting diameter: 8.0 mm
• Shank type: hexagonal (hex shank) for secure clamping
• Tip/geometry: twist drill with cutting flutes for metal
• Intended materials: ferrous and non-ferrous metals
• Use environment: handheld drills and drill presses/bench drills

How to use

Mount the drill bit in a compatible chuck or quick-change adapter, ensuring the hex shank seats fully for a secure grip. Select an appropriate cutting speed and feed rate for the metal being drilled; use lower speeds for harder steels and higher speeds for softer non-ferrous metals. Apply steady, even pressure and allow the drill to cut without forced overload. Use cutting fluid or lubricant when drilling harder metals to reduce heat buildup and extend tool life. After use, clean chips from the flutes and store the bit dry to prevent corrosion.

Usage recommendations

For best results, match drill speed and lubrication to the workpiece material: low speed and cutting fluid for hardened or stainless steels, medium speed for mild steel, and higher speed for aluminum and copper. Use proper personal protective equipment and secure the workpiece before drilling.