Tap (gwintownik) FANAR M7 DIN-371C R40 (6H) HSSE TN 800X

Threading tap FANAR M7 DIN-371C R40 (6H) HSSE TN 800X is a precision tool for cutting internal metric threads M7. Manufactured to DIN-371C form with a 6H tolerance class, this tap is made from HSSE (high-speed steel with cobalt) and finished with a titanium nitride (TiN) coating to improve surface hardness and wear resistance. It is intended for manual or machine tapping operations on materials compatible with HSSE/TiN tooling.

Advantages

The HSSE substrate provides improved red hardness and toughness compared with conventional high-speed steel, while the TiN coating reduces friction and extends tool life under appropriate cutting conditions. The DIN-371C geometry and R40 thread lead are designed to produce clean, consistent M7 threads with a 6H tolerance class. The tool is suitable for both hand-held taps and machine tapping, offering stable performance when used with proper cutting fluid and correct feed/rotation settings.

Suitable for

• Cutting internal metric M7 threads in steel and alloy steels compatible with HSSE tooling
• General-purpose machine tapping where DIN-371C form and 6H tolerance are required
• Manual hand-tapping operations with appropriate tap wrench and alignment
• Repairing or reworking existing M7 threads within specified tolerance

Key specifications

• Thread size: M7 (metric)
• Thread form: DIN-371C
• Tolerance class: 6H
• Material: HSSE (high-speed steel with cobalt)
• Coating: TiN (titanium nitride)
• Thread lead/shape: R40 (as specified for DIN-371C geometry)
• Intended use: manual and machine tapping

How to use

Select a proper drill size for the M7 nominal thread before tapping, secure the workpiece, and ensure correct alignment of the tap with the hole axis. Use appropriate cutting fluid to reduce friction and evacuate chips. For machine tapping, set correct spindle speed and feed to match the thread pitch and material; for hand tapping, use steady, even turns and periodically reverse slightly to break chips. Apply consistent axial pressure and avoid excessive lateral loads to prevent tap breakage. After cutting, clean chips from the thread and inspect the thread fit against mating parts.

Usage recommendations

Use this HSSE TiN-coated tap on materials and applications suited to cobalt-alloyed high-speed steel. For steels and tougher alloys, prioritize lower cutting speeds and robust coolant supply; for softer, non-ferrous materials, use moderate speeds and ensure chip evacuation. Replace the tap if wear or coating damage affects thread quality, and follow tool-holder and machine manufacturer guidance for optimal results.