Series E102 ISO-Metric thread serial taps with straight flutes, set of size NO8. Cobalt-based high-speed steel with a steam-tempered surface finish, suitable for 1.5xD threading in both through and blind holes, specifically designed for stainless steel and cast-iron materials. Features and Benefits Manufactured from cobalt high speed steel for high resistance and durability Suitable for 1.5xD threading in both through and blind holes in stainless steel and cast-iron materials. Metric coarse thread form Right hand rotation Straight flute tap Contents Set of 3: Taper, Second, Plug Tap with a truncated thread profile and 6-8 x P taper lead Tap with a truncated thread profile and 3.5-5 x P second lead Tap with a 2-3xP plug lead Typical Applications Engineering Manufacturing Ideal for tapping in blind or through-holes Cast-iron Stainless steel Standards DIN 352 - Thread form standard DIN Thread pitch diameter tolerance zone