spiral grooves 15°, HSS-E, vaporized, metric ISO-thread, right thread, Tolerance field ISO2 / 6H, forme of taper lead C (2-3 x P), cylinder shank with square piece, number of teeth 2-4 Power class N For short- and medium-chipping materials with a tensile strength of Rm > 350...1000 N/mm2. Length of taper lead: 2.5 x P Hole Type: pocket holes < 1.5 x d. Designs: M2...M6: N350V-3, reinforced shaft, DIN 371 M8...M24: N450V-3, falling through shaft, DIN 376
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