Drill Countersink Abraboro HSS-G 1.5–6.3 mm / 45 mm Abraboro AB91030063

Abraboro HSS-G countersink and drill AB91030063 is a precision HSS tool for drilling and enlarging holes with diameters from 1.5 to 6.3 mm and an overall length of 45 mm. Manufactured from high-speed steel (HSS-G), this combined countersink/drill is designed for machining metal and preparing holes for fasteners while providing effective deburring and chamfering in one operation. It fits standard chucks and is suitable for use with handheld drills and drill presses in maintenance, fabrication and assembly environments.

Advantages

The Abraboro HSS-G tool delivers durable cutting performance thanks to high-speed steel construction that maintains edge sharpness under typical metalworking conditions. Its combined drill and countersink geometry reduces tool changes by allowing drilling and countersinking in a single pass. The 1.5–6.3 mm diameter range covers common pilot and clearance hole sizes, while the 45 mm overall length provides reach for typical components and thin workpieces. The design is compatible with standard chucks, ensuring straightforward installation and stable rotation.

Suitable for

• Drilling and enlarging small-to-medium holes in steel, non-ferrous metals and alloys
• Preparing and deburring holes for screws, rivets and bolts
• Maintenance and repair tasks in workshops and industrial settings
• Light fabrication and assembly work where combined drilling and countersinking saves time

Key specifications

• Material: High-speed steel (HSS-G)
• Diameter range: 1.5–6.3 mm
• Total length: 45 mm
• Combined function: drilling and countersinking/deburring
• Compatible with: standard drill chucks and drill presses

How to use

Secure the Abraboro HSS-G countersink/drill in a comfortable, tight-fitting drill chuck and set the drill speed appropriate for the workpiece material—lower speeds for harder metals, higher speeds for softer non-ferrous metals. Align the tool with the intended hole position and apply steady, moderate feed pressure. Allow the tool to perform the drilling and countersinking action in one pass or, for deeper holes, drill first and finish with a separate countersink pass. Use cutting lubricant when machining steel to extend tool life and improve chip evacuation. After use, clean the tool of debris and store in a protective holder.

Usage recommendations

For best results, use appropriate cutting fluid when working with steel, maintain steady feed rates to avoid excessive heat, and check the tool regularly for wear. Replace the tool when the cutting edge becomes dull to preserve hole accuracy and surface finish.