Machine Tap M8 DIN 371 C Form 6HX HSSE-PM TS1400 Spiral Point for Through Holes

In a busy metalworking shop, a machinist sets up a CNC machine to tap dozens of M8 through holes in a stainless steel flange. The tap must cut cleanly, resist wear, and eject chips forward to prevent clogging. This machine tap, with its spiral point geometry and powder metallurgy HSSE-PM substrate, is built for exactly that task—delivering reliable performance in high-volume production.

Key specifications

• Thread size: M8 (metric coarse)
• Standard: DIN 371 with reinforced shank
• Material: HSSE-PM (high-speed steel with cobalt, powder metallurgy)
• Tolerance class: 6HX
• Chamfer form: C (2–3 threads)
• Flute type: Spiral point (for through holes)
• Coating: TS1400 for high wear resistance
• Overall length: 90 mm; thread length: 25 mm; shank diameter: 8 mm; square drive: 6.2 mm
• Cutting direction: Right hand

Why choose it

The powder metallurgy process produces a fine, uniform carbide distribution, giving this tap exceptional toughness and wear resistance. The TS1400 coating further enhances tool life, reducing downtime and cost per hole. The 6HX tolerance class ensures threads are within specification for standard metric nuts and bolts, while the spiral point design pushes chips ahead of the tool, making it ideal for through-hole applications.

Ideal use cases

• Threading through holes in general steels, alloy steels, and stainless steels
• High-volume production environments where consistent quality and long tool life are critical
• CNC machining centers and tapping machines requiring reliable chip evacuation
• Applications demanding tight tolerance threads (6HX) for standard fasteners

Good to know

This tap is designed for machine tapping only, not for hand use. Always use appropriate cutting fluid to maximize tool life. The reinforced shank (DIN 371) provides added strength and rigidity, reducing the risk of breakage in demanding operations. Store in a dry, protected environment to preserve the coating integrity.