Tap FANAR GWINTOWNIK M8 DIN 376C R45 (6HX) HSSE-PM HL MASTERTAP

FANAR GWINTOWNIK M8 DIN 376C R45 (6HX) HSSE-PM HL MASTERTAP is a machine tap designed for cutting internal M8 threads to the DIN 376C standard. Manufactured from HSSE-PM (high-speed steel with cobalt), the tool features R45 thread-forming geometry and a 6HX tolerance class. It is intended for use in metalworking applications where accurate M8 internal threads are required and is compatible with production tapping, toolroom work and CNC machining.

Advantages

The HSSE-PM material provides wear resistance and preserved cutting performance in demanding metalworking conditions. R45 geometry supports efficient chip formation and evacuation to reduce tap wear and improve thread quality. The 6HX tolerance class ensures consistent fit and interchangeability for standard M8 internal threads. The tool’s design is suitable for machine tapping, enabling repeatable results in automated and manual setups.

Suitable for

• Cutting internal M8 threads in steel and common ferrous alloys
• Production tapping on CNC machining centres
• Toolroom and workshop tapping operations
• Repetitive or series threading tasks requiring DIN 376C compliance

Key specifications

• Thread size: M8
• Standard: DIN 376C
• Geometry: R45
• Tolerance class: 6HX
• Material: HSSE-PM (high-speed steel with cobalt)

How to use

Install the tap in an appropriate machine holder or collet suitable for machine tapping, ensuring concentric alignment and correct mounting depth. Select cutting parameters compatible with the workpiece material and toolholder rigidity: appropriate spindle speed, feed per revolution, and cutting fluid for metal cutting. Advance the tap at the recommended feed to engage the full thread profile, clear chips frequently or use pecking cycles on CNC machines to avoid chip packing, and reverse to break chips if necessary. After threading, inspect the thread for size and surface finish against DIN 376C requirements.

Usage recommendations

For optimal tool life and thread quality, use suitable cutting fluid or coolant, maintain correct spindle speed and feed for the workpiece material, and replace the tap when wear or damage affects thread accuracy. For brittle or adhesive materials, adjust cutting conditions and chip evacuation strategies to prevent tap breakage.