VF-IN371&376 HSSE-Co5% Spiral Flute Form C Machine Tap 7PCS Set

The machine tap set for M 3 - 12 to DIN 371/376, made of HSS-E, Form C, is designed for machine cutting of internal threads in the stated range. The combination makes sense when several thread sizes with the same tool logic are to be kept organised and ready for use.

M identifies an ISO metric coarse thread to DIN 13. It is the standard for screw connections in European mechanical engineering, production and maintenance. Form C has a chamfer of 2 to 3 threads and is intended for blind holes. The blue colour ring BLUE RING identifies machine taps for free-cutting, case-hardening and heat-treatable steels, unalloyed and alloyed steels up to 1,200 N/mm², stainless and acid-resistant steels with a high chromium-nickel content (V4A), malleable cast iron and aluminium alloys with more than 0.5 % silicon; conditionally suitable for stainless VA steels up to 850 N/mm², aluminium alloys below 0.5 % silicon, titanium alloys and thermosets. HSS-E is a cobalt-alloyed high-speed steel with higher hot hardness than plain HSS.