SwissTech: M3.5X0.6 White 371 HSS-EV Nit Though Tap Straight Flute - ISO Metric Coarse HSS-EV Nitride Finish. For through holes. Taper lead to DIN form D (taper) (3.5 x P to 5 x P). Tapping tolerance to 6HX. Manufactured to DIN 371/376. MPN…View more