Tap FANAR M3 DIN-371C (6H) HSSE TN 800X

FANAR tap M3 DIN-371C (6H) HSSE TN 800X is a metric hand and machine tap designed for cutting internal M3 threads according to DIN 371C. Made from high-speed steel with cobalt (HSSE) and finished with a titanium nitride (TN) coating, this tap is intended for reliable thread-forming and reconditioning operations in steels and non-ferrous alloys. Its geometry and tolerance class 6H ensure compatibility with standard metric M3 threads used in precision assembly and repair tasks.

Advantages

The HSSE material with cobalt enhances hardness and heat resistance for extended tool life during intermittent and continuous tapping. The TN coating reduces friction and wear, improving chip evacuation and decreasing the risk of built-up edge. Conformance to DIN 371C profile and 6H tolerance provides repeatable thread accuracy and interchangeability with standard M3 fasteners. The tap's design allows use in both manual tapping and machine tapping applications when correct speeds and feeds are applied.

Suitable for

• Cutting new internal M3 threads in steel and non-ferrous metals
• Repairing or reconditioning worn M3 threads
• Small-series production and maintenance work in workshops
• Manual tapping and machine tapping with appropriate tooling

Key specifications

• Thread size: M3
• Thread standard: DIN 371C
• Tolerance class: 6H
• Material: HSSE (high-speed steel with cobalt)
• Coating: Titanium nitride (TN)
• Intended use: Internal metric thread cutting (hand and machine)

How to use

Select the correct drill size for the M3 tap according to DIN recommendations before starting. Secure the workpiece and ensure proper alignment with the tap axis to avoid cross-threading. For manual tapping, use a suitable tap wrench and apply cutting fluid appropriate for the workpiece material; turn the tap forward for several turns then back it off slightly to break chips. For machine tapping, use correct spindle speed, feed and a rigid setup or a floating tap holder to accommodate axial runout. Periodically clear chips and inspect the tap for wear; replace if cutting performance degrades.

Usage recommendations

Use cutting fluid matched to the workpiece material to extend tool life and improve surface finish. For high-production or deep-hole applications consider stepped tapping or peck tapping cycles and check thread fit with a gauge. Store taps in protective holders to prevent damage to cutting edges and coating.