Machining > Threading > Taps > Metric - Spiral Flute Taps | Suttons Spiral Flute Taps - R45 VADH | Dimensions | d1: M20 | d2 (mm): 16 | l1 (mm): 140 | l2 (mm): 25 | l4 (mm): 15 | Square Size (mm): 12 | z: 4 | Drill Size (mm): 17.5 (drill) | Pitch (mm): 2.5 (pitch) | Features | Suitable for controlled tapping in deep holes | Use in stainless steels and high strength steels up to 850N/mm2 | Blind holes | Depths up to 3 x d1 | Specifications | Designation: VA (for stainless and tough steels) | Material: Premium Grade High Speed Steel (HSSE-V3) | Finish: Titanium Carbonitride (TiCN) | Max Cut Depth: 3xD | Shank Form: Reduced Shank (with square drive) | Helix Angle: R45 | X: als | Type: Spiral Flute | Standard: DIN376 | Thread Form: ISO Metric Coarse (M) | Nut Tolerance: ISO 2 / 6H | Lead: Form C / 3 x P | Applications | Steel - Non-alloy, cast & free cutting (~ 0.15 %C): Annealed | Steel - Non-alloy, cast & free cutting (~ 0.45 %C): Annealed | Steel - Corrosion resistant & cast - Ferritic / Martensitic: Annealed | Stainless Steel - Austenitic: Age Hardened | Stainless Steel Duplex | Stainless Steel - Precipitation Hardening | High temperature alloys - Fe based: Annealed