Drill bit GRAPHITE HSS cylindrical for metal 3.5 mm (55H016)

GRAPHITE HSS cylindrical drill bit, 3.5 mm diameter, designed specifically for drilling metal. Made from high-speed steel (HSS), this drill bit provides improved wear resistance and heat tolerance during continuous metalworking. Its cylindrical shank fits standard chucks on handheld drills and drill presses, allowing precise hole making in a variety of ferrous and non-ferrous metals in workshop, maintenance and fabrication tasks.

Advantages

The HSS material ensures durability and resistance to softening at elevated temperatures, extending tool life under heavy cutting loads. The 3.5 mm diameter offers a balance between hole accuracy and chip evacuation for small-to-medium metalworking tasks. A cylindrical shank provides compatibility with most standard drill chucks and steady clamping for consistent concentricity. The geometry of the cutting lips and point is optimized for general-purpose metal drilling, reducing walking and improving start-up accuracy.

Suitable for

• Drilling holes in steel plates and sections
• Creating precise holes in aluminum and non-ferrous alloys
• Maintenance and repair tasks using handheld drills or drill presses
• Workshop and fabrication jobs requiring small-diameter metal holes

Key specifications

• Material: high-speed steel (HSS)
• Diameter: 3.5 mm
• Shank type: cylindrical
• Intended material: ferrous and non-ferrous metals
• Compatibility: standard drill chucks (handheld drills and drill presses)

How to use

Secure the workpiece and mark the drilling point accurately. Mount the 3.5 mm GRAPHITE HSS drill bit in a suitable chuck, ensuring it is centered and clamped tightly. Use an appropriate cutting speed and feed for the metal being drilled; reduce speed for harder steels and increase for softer non-ferrous alloys. Apply steady pressure and allow the bit to cut without excessive force. Use cutting fluid or lubricant when drilling steel to reduce heat, prolong tool life and improve surface finish. Clear chips regularly to prevent clogging and overheating.

Usage recommendations

For best results, choose drill speeds appropriate to the workpiece material, maintain firm but non-excessive feed pressure, and use cutting fluid when machining steel. Inspect the bit for wear or dullness before use and replace if cutting performance declines.