Tap Bit GEKO HSS M5 x 0.8 mm HEX — threading M5×0.8, HSS material, hex shank

GEKO HSS tap bit M5 x 0.8 mm HEX is a precision tool designed to cut and repair internal metric threads with a pitch of 0.8 mm for M5 applications. Manufactured from high-speed steel (HSS), the tap bit combines wear resistance and toughness for reliable performance in metalworking and compatible materials. The hex shank provides a secure fit in chucks, bit holders and impact drivers, enabling both hand and machine tapping operations.

Advantages

The HSS construction offers good hardness and heat resistance for consistent cutting and longer tool life compared with standard carbon steel taps. The hex shank ensures positive engagement in quick-change holders and reduces slippage during high-torque use. The geometry is optimized for chip evacuation and stable thread formation when used in appropriate materials, reducing the risk of breakage when proper technique is applied.

Suitable for

• Cutting new internal M5×0.8 threads in steel, alloy and similar metals
• Repairing damaged or worn M5×0.8 threads
• Small-scale production and workshop maintenance tasks
• Use with manual tap holders, electric drivers and impact tools that accept hex shanks

Key specifications

• Thread size: M5 × 0.8 mm
• Material: High-speed steel (HSS)
• Shank type: Hex (HEX) for secure holding
• Application: Internal metric thread cutting and repair
• Compatible with: Manual and machine tapping methods

How to use

Select the correct drill size for the M5×0.8 tap, secure the workpiece, and ensure alignment between the tap and the hole. Insert the GEKO HSS tap bit into an appropriate hex-compatible holder or driver. For manual tapping, use a tap wrench or holder and advance the tap with steady, even pressure, reversing periodically to break chips. For machine tapping, set the correct speed and feed for the material and monitor chip evacuation. Withdraw the tap carefully after cutting and clean chips from flutes before reuse.

Usage recommendations

Use suitable cutting fluid for metals to improve chip flow and reduce heat; do not apply excessive lateral force; inspect the tap for wear before use and replace when cutting performance degrades.