Pora Bosch HSS metallikierukkapora 3 mm, valssattu, 1/4 tuuman (6,3 mm) varsi, 1 kpl

Bosch Accessories 2609255140 is a 3 mm HSS metal spiral drill bit with rolled flutes and a 1/4" (6.3 mm) shank. Manufactured by Bosch, this single-piece drill bit is designed for drilling metal and other suitable materials where a high-speed steel cutting edge and a standard hex shank are required.

Advantages

The HSS material provides good hardness and wear resistance for drilling metal. Rolled flutes increase strength and durability of the cutting geometry. The 1/4" (6.3 mm) shank fits common quick-change chucks and bit holders, allowing fast tool changes and stable driving.

Suitable for

Key specifications

How to use

Secure the 1/4" hex shank in a compatible drill chuck or quick-change holder. Select an appropriate drill speed and apply steady feed pressure. Use cutting fluid when drilling tougher metals to extend tool life and improve chip evacuation. After drilling, clear chips and inspect the hole for required dimensions.

Recommendations

For best performance when drilling steel, start at moderate speed, use cutting lubricant, and avoid excessive side load to prevent breaking the 3 mm bit. Replace the bit if cutting performance declines or if the tip is damaged.