Drill Bit Wiha 27899

M5, 1/4", 41 mm, 10 g. The Wiha 27899 drill bit is made from high-quality ground HSS steel and is designed for drilling, thread cutting and deburring in metal and plastic. It is supplied blister-packed and has a 1/4" hex shank (DIN 3126 C 6.3) for secure fit in compatible drivers and chucks.

Advantages

The HSS ground construction provides wear resistance and durability while maintaining a precise cutting edge. The integrated 1/4" hex shank ensures quick, secure insertion into bit holders and battery-powered drivers. Blister packaging protects the bit during storage and transport.

Suitable for

Key specifications

How to use

Insert the 1/4" hex shank into a compatible chuck or bit holder and secure it. Use appropriate speed and feed for the work material—lower speeds for harder metals, moderate speeds for plastics. Perform drilling, then use the same bit to cut or rethread the M5 thread and remove burrs in a single pass where applicable. Apply cutting fluid when working with metals to extend tool life and improve finish.

Recommendations

For best results, use the Wiha 27899 with a compatible 1/4" hex quick-change holder or cordless driver. Match speed and lubrication to the material: lower RPM and cutting oil for steel, moderate RPM and light support for plastics. Inspect the bit before use and replace if excessively worn to avoid poor thread quality.