Drill bit Abraboro HSS solid cylindrical 8.5 mm, metal drilling, model AB41908500

Abraboro HSS solid cylindrical drill bit, 8.5 mm diameter, created for accurate metal drilling in workshop and industrial environments. Made from high-speed steel (HSS), this cylindrical drill bit is intended for cutting ferrous and non-ferrous metals and provides reliable edge retention and wear resistance during repeated use. The design is compatible with standard chucks on hand drills and drill presses and is suitable for making through-holes, pilot holes and general metal fabrication tasks.

Advantages

The HSS material delivers high hardness and heat resistance at typical drilling speeds, reducing wear and maintaining cutting performance. The solid cylindrical shank ensures secure clamping in standard chucks and stable rotation under load. The 8.5 mm diameter provides a common size for fitments and fits a range of fastening and assembly tasks. The bit’s geometry is optimized for general-purpose metal drilling, balancing chip evacuation and cutting efficiency in a variety of materials.

Suitable for

• Drilling through mild steel, stainless steel, aluminium and other non-ferrous metals
• Creating pilot holes for tapping or larger-diameter drilling
• General metal fabrication and maintenance tasks
• Use with hand-held drills and drill presses

Key specifications

• Diameter: 8.5 mm
• Material: High-speed steel (HSS)
• Shank type: Solid cylindrical shank for standard chucks
• Intended use: Metal drilling (ferrous and non-ferrous)
• Typical applications: Through-holes, pilot holes, general fabrication

How to use

Secure the drill bit in a properly tightened chuck, ensuring the shank is fully seated and concentric. Select an appropriate cutting speed and feed rate for the workpiece material; lower speeds and steady feed are recommended for harder steels, while higher speeds can be used for softer metals like aluminium. Use cutting fluid or coolant where appropriate to reduce heat build-up and extend tool life. Start with light pressure to establish the hole, then maintain steady pressure to complete the drilling operation. Clear chips regularly to avoid clogging and overheating.

Usage recommendations

For best results, match drill speed and lubrication to the material being drilled: use cutting oil for steel and general-purpose lubricants for stainless steel, and use higher speeds with moderate lubrication for aluminium. Inspect the cutting edges periodically and replace the bit if excessive wear or chipping appears to maintain hole quality and safety.