Thread Tap FANAR M12 DIN 376C R40 (6G) HSSE TN 800X

FANAR M12 thread tap DIN 376C R40 (6G) HSSE TN 800X is a precision cutting tool designed for producing internal metric threads in metalworking environments. Manufactured from high-speed steel with cobalt (HSSE) and finished with a TN 800X protective coating, this M12 tap meets the DIN 376C form and 6G tolerance requirements. It is suitable for both manual and machine tapping operations where consistent thread geometry and wear resistance are required.

Advantages

The HSSE material provides increased toughness and heat resistance compared with standard high-speed steel, helping maintain cutting performance under higher temperatures and tougher materials. The TN 800X coating reduces friction, improves tool life and chip evacuation, and contributes to more consistent thread quality. The DIN 376C geometry ensures the produced threads conform to established metric internal thread form standards, while the 6G tolerance provides a typical commercial fit for bolts and fasteners.

Suitable for

• Cutting internal M12 metric threads in steels and non-ferrous metals
• Manual tapping with tap wrenches or T-handles
• Machine tapping in drilling or tapping heads on lathes, milling machines and CNC machines
• Production and repair work where DIN 376C thread form is required

Key specifications

• Thread size: M12
• Thread form: DIN 376C
• Tolerance: 6G
• Designation: R40 (tap flute/profile)
• Material: high-speed steel with cobalt (HSSE)
• Coating: TN 800X
• Application: internal thread cutting, manual or machine use

How to use

Select the correct drill diameter for the M12 threaded hole and secure the workpiece. Use appropriate cutting fluid for the material being tapped to reduce heat and improve chip removal. For manual tapping, start the tap straight and apply steady, even pressure, reversing periodically to break chips. For machine tapping, set appropriate spindle speed and feed to match the tap pitch and material; ensure proper alignment and use rigid clamping to avoid deflection. Inspect threads after tapping and clean chips and coolant residue from the part and the tap.

Usage recommendations

Use suitable cutting fluid and moderate spindle speeds when tapping hardened or alloy steels. Replace the tap when wear or chipping is observed to maintain thread quality and prevent workpiece damage. For blind holes, use a tap with appropriate flute length or chip evacuation method and withdraw the tap frequently to clear chips.