Tap FANAR M8 DIN 371C HSSE-PM TS 1400-HT — thread cutting tool, 6HX tolerance

FANAR M8 tap DIN 371C HSSE-PM TS 1400-HT is a thread-cutting tool designed to produce metric M8 internal threads with DIN 371C taper-form geometry. Made from HSSE-PM (high-speed steel produced by powder metallurgy) and finished to a 6HX tolerance class, this tap is intended for general engineering and maintenance tasks where a durable cutting edge and consistent thread profile are required. The tool is suitable for hand tapping or machine tapping in a variety of ferrous and some non-ferrous materials when appropriate cutting conditions are observed.

Advantages

The HSSE-PM material provides improved wear resistance and toughness compared with conventional high-speed steels, helping to extend tool life under intermittent and continuous cutting. DIN 371C geometry offers a tapered starting section that facilitates easy engagement and reduces thread runout during manual or machine operation. The 6HX tolerance ensures reliable thread fit for general-purpose assemblies where a slightly tighter fit on the minor diameter is acceptable. Overall, the tool balances durability, accuracy, and compatibility with standard M8 fastening systems.

Suitable for

• Hand tapping and machine tapping of M8 threads in maintenance and repair operations
• General engineering applications requiring DIN 371C taper-form taps
• Working in steels and commonly used alloyed materials where HSSE-PM wear resistance is beneficial

When it may not be suitable

This tap is not intended for cutting threads in extremely hard or abrasive materials beyond typical alloy steels unless cutting data and tool life expectations are adjusted accordingly. For production environments that require high-volume, thread-forming or bottoming operations, a specialized ground taper or plug tap designed specifically for the process may be preferable. Also, where a different tolerance class is required (for example, a looser or a class fit specific to precision assemblies), choose a tap with the appropriate tolerance.

Key specifications

• Thread size: M8
• Geometry: DIN 371C (taper-form)
• Material: HSSE-PM (powder metallurgy high-speed steel)
• Tolerance class: 6HX
• Usage: suitable for hand and machine tapping

How to use

Select appropriate cutting fluid and secure the workpiece to prevent movement. For hand tapping, start the tap perpendicular to the workpiece and apply steady, controlled rotation, backing off periodically to clear chips. For machine tapping, set correct spindle speed and feed according to material and tap manufacturer recommendations; ensure rigid tool holding and alignment to avoid breakage. Monitor tool wear and replace the tap when cutting performance degrades or thread quality falls below requirements.

What to consider before purchase

• Verify that M8 thread size and DIN 371C taper-form geometry meet the application requirements
• Confirm material compatibility and select appropriate cutting speeds and lubricants for the workpiece
• Ensure 6HX tolerance class is acceptable for the intended assembly fit

Usage recommendations

Use suitable cutting fluid, maintain proper alignment, and choose speeds and feeds matched to the workpiece material to maximize tool life and achieve consistent M8 thread quality.