Drill bit FANAR HSS cylindrical 7.7 mm for metal, model W2-101811-0770

FANAR HSS cylindrical 7.7 mm drill bit for metal is a straight-shank high-speed steel cutting tool designed to produce precise holes in ferrous and non-ferrous metals. The bit is intended for use in standard drill chucks and bench or portable drilling machines. Its HSS material ensures wear resistance and cutting stability for typical workshop, maintenance and light manufacturing operations where accurate metal drilling is required.

Advantages

The HSS construction provides improved hardness and heat resistance compared with standard carbon steel, supporting sustained cutting performance at elevated spindle speeds. The cylindrical (straight) shank ensures compatibility with common three-jaw and keyless chucks, delivering stable grip and concentricity. The 7.7 mm diameter gives a specific hole size for fits that require slightly undersized or custom-dimension drilling without reaming. The geometry of the flute and point is optimized for metal cutting, reducing burr formation and improving chip evacuation during through-drilling and short deep-hole tasks.

Suitable for

• Drilling holes in mild steel, stainless steel, aluminium and non-ferrous alloys
• Workshop repairs and maintenance tasks
• Prototype work and small series manufacturing
• Use with hand drills, drill presses and portable drilling machines

Key specifications

• Material: high-speed steel (HSS)
• Shank type: cylindrical/straight shank compatible with standard chucks
• Nominal diameter: 7.7 mm
• Intended application: metal drilling (ferrous and non-ferrous)
• Flute design: two-flute configuration for chip removal and cutting stability

How to use

Secure the drill bit firmly in the chuck, making sure it is centered to avoid runout. Select an appropriate spindle speed and cutting fluid for the specific metal being drilled: lower speeds and higher lubrication for stainless steel, higher speeds for aluminium with minimal pressure. Apply consistent feed pressure and allow the bit to cut without excessive force to prevent overheating or premature wear. Retract periodically on deeper holes to clear chips and maintain cutting efficiency.

Usage recommendations

For best results, use a compatible cutting lubricant when drilling steel and stainless alloys, and reduce spindle speed for hard materials. Inspect the tip for wear or chipping before use and replace the bit when accuracy or surface finish deteriorates.