TOP line. In HSS-E steel, particularly treated for superior performance and long life. Ground and polished after hardening. Cutting geometry optimized for maximum chip evacuation.
Reduced shank, with 40° helix for deep blind holes.
Thread: American - UNF Pitch - ANSI-B1.1 (DIN 374). Tolerance 2B. Right-hand use. TiAlN coated. For all types of steels, also for hardened non-alloy steel, stainless steel, nitrided steel, non-oxidizable and antacid steel up to 1000 N / mm2, aluminum, its alloys and long-chipping metals.
For Ø holes for tapping see technical tables and tips Art. 8400 G - 8500 G.