Machining > Threading > Taps > Imperial - Spiral Flute Taps | Suttons Spiral Flute Taps - R45 VADH | Dimensions | d1 (mm): 15.875 | d2 (mm): 12 | l1 (mm): 110 | l2 (mm): 20 | l3 (mm): n/a| | l4 (mm): 12 | Square Size (mm): 9 | z: 3 | Drill Size (mm): 14.5 (drill) | TPI: 18 (TPI) | Features | Use in stainless steels and high strength steels up to 1000N/mm2 | Blind holes | Suitable for synchronous tapping in machine operations | Depths up to approx. 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: Reinforced Shank (with square drive) | Helix Angle: R45 | X: als | Type: Spiral Flute | Standard: DIN2184-1 | Thread Form: UNF | Nut Tolerance: 2B | 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