Drill bit GRAPHITE HSS cylindrical 3 mm for metal, model 55H014

GRAPHITE HSS cylindrical 3 mm drill bit is engineered for drilling small-diameter holes in metal. Manufactured from high-speed steel (HSS), this 3 mm drill is designed to withstand elevated cutting temperatures and maintain edge hardness during continuous use. The straight cylindrical shank ensures stable gripping in standard chucks, making the bit suitable for both hand-held drills and drill presses in workshop, manufacturing, and maintenance settings.

Advantages

This HSS drill bit offers wear resistance and thermal stability thanks to its high-speed steel construction, enabling consistent performance when drilling steel, cast iron and non-ferrous metals. The 3 mm diameter provides precision for small holes while the straight shank simplifies mounting and reduces slippage in the chuck. The bit’s geometry is optimized for metal cutting, facilitating controlled chip evacuation and accurate hole positioning.

Suitable for

• Drilling holes in steel and stainless steel (thin sections)
• Creating pilot or clearance holes in cast iron and non-ferrous metals (aluminum, brass)
• Workshop repairs, machinery maintenance and small-scale manufacturing
• Use with hand-held drills and drill presses for precision metalwork

Key specifications

• Material: high-speed steel (HSS)
• Shank type: straight cylindrical shank for standard chucks
• Diameter: 3 mm
• Intended material: ferrous and non-ferrous metals
• Tip/point: metal-drilling geometry for efficient cutting and chip removal

How to use

Secure the drill bit firmly in the chuck, ensuring proper alignment and minimal runout. Select an appropriate cutting speed and feed for the workpiece material; lower speeds are recommended for harder steels, while higher speeds may be used for softer non-ferrous metals. Apply steady pressure and allow the bit to cut without excessive force. Use cutting lubricant when drilling steel or stainless steel to reduce heat and extend tool life. Periodically withdraw the bit to clear chips and prevent clogging.

Usage recommendations

For best results, match drill speed and coolant to the material: use cutting oil for steel and moderate spindle speeds for small diameters. Inspect the bit before use for signs of wear or damage and replace when the cutting edge becomes dull to maintain hole accuracy and prevent workpiece damage.