Machine Tap M4 DIN 371 Form B HSSE TiN 6H, Through Hole, 70 mm

Machine tap for M4 threads with a 0.7 mm pitch, engineered for high-performance through-hole tapping in steel, stainless steel, non-ferrous metals, and cast iron. The spiral point (Form B) geometry pushes chips forward, preventing chip congestion and enabling faster, uninterrupted threading. The TiN (Titanium Nitride) coating reduces friction and heat, extending tool life even in demanding production environments.

Advantages

The HSSE (High-Speed Steel with Cobalt) substrate delivers superior hardness and heat resistance, allowing higher cutting speeds and longer tool life compared to standard HSS. The TiN coating further enhances wear resistance and reduces built-up edge, ensuring consistent thread quality. The reinforced shank provides added rigidity, minimising deflection and improving thread accuracy. The 6H tolerance class guarantees a precise fit for standard metric threads.

Suitable for

• Through-hole tapping in steel and cast steel (material group P)
• Stainless steel and high-alloy steels (material group M)
• Non-ferrous metals such as aluminium and copper alloys (material group N)
• Cast iron and malleable cast iron (material group K)
• CNC machining centres and conventional tapping machines

Key specifications

• Thread size: M4
• Thread pitch: 0.7 mm
• Standard: DIN 371
• Tap form: Form B (spiral point / gun nose)
• Material: HSSE (High-Speed Steel with Cobalt)
• Coating: TiN (Titanium Nitride)
• Thread tolerance: 6H
• Overall length: 70 mm
• Thread length: 13 mm
• Shank diameter: 4.5 mm
• Square size: 3.4 mm
• Number of flutes: 3
• Cutting direction: right-hand
• Product series: 800X

Recommendations

For optimal results, use a tapping speed appropriate for the workpiece material and apply a suitable cutting fluid. Ensure the tap is properly aligned to avoid thread damage. This tap is ideal for production environments where consistent thread quality and long tool life are critical.