Tap (gwintownik) FANAR M5 DIN 371B 6G HSSE 800

FANAR M5 tap DIN 371B (6G) HSSE 800 is a machine hand tap designed to cut M5 metric threads to DIN 371B form with 6G tolerance. Manufactured from HSSE 800 high-speed steel with added cobalt for improved wear resistance and heat stability, this tap is intended for use in through and blind holes in steel and other machinable metals in workshop and production settings. The tool features the standard straight flute geometry of DIN 371B for reliable chip formation and consistent thread profile when used with appropriate cutting conditions.

Advantages

The HSSE 800 material combines high-speed steel properties with cobalt content to increase hardness and maintain cutting performance at elevated temperatures, extending tool life in medium-duty production and repair tasks. The DIN 371B form and 6G tolerance ensure compatibility with standard M5 mating parts and provide predictable thread fit. The tap’s precision ground flutes and nominal shank facilitate accurate alignment in hand tapping fixtures or machine tapping adapters.

Suitable for

• Cutting M5 metric threads in through holes
• Cutting M5 metric threads in blind holes
• Threading in carbon steel and alloy steels
• Workshop repairs and small-scale production runs

Key specifications

• Thread size: M5
• Thread form: DIN 371B (straight flute tap)
• Tolerance class: 6G
• Material: HSSE 800 (high-speed steel with cobalt)
• Application: manual and machine tapping for through and blind holes

How to use

Select appropriate tapping speed and cutting fluid according to the workpiece material. Secure the workpiece and align the tap square to the hole axis. For hand tapping, start the tap carefully until threads engage, then apply steady pressure and rotate the tap forward for several turns followed by a partial reverse to break chips. For machine use, ensure the tap holder provides axial alignment and controlled feed; use peck tapping or chip evacuation for blind holes.

Usage recommendations

Use a suitable cutting lubricant for steel, monitor wear when machining abrasive or heat-prone alloys, and replace the tap if thread quality degrades. Store the tool in a dry environment to prevent corrosion.