Machining > Threading > Taps > Metric - Thread Forming Taps | Suttons Thread Forming Taps - IK | Dimensions | d1: M20 | d2 (mm): 16 | l1 (mm): 140 | l2 (mm): 25 | l4 (mm): 15 | Square Size (mm): 12 | Drill Size (mm): 18.9 (drill) | Pitch (mm): 2.5 (pitch) | Features | For high speed and precision tapping | For rigid tapping in CNC machines with synchronised feed | For aluminium and aluminium alloys | Process of plastic deformation to imprint thread on material | Blind and through holes up to 2 x d1 | h6 endmill shank | Specifications | Designation: N (for normal general purpose type materials) | Material: Powdered Metallurgy - Vanadium Grade High Speed Steel (PM-HSSE V3) | Finish: Titanium Nitride (TiN) | Max Cut Depth: 2xD | Shank Form: Reinforced Shank (square-end, drive-flat) | X: ru | Type: Fluteless - Multi Coolant Groove | Standard: Sutton | Thread Form: ISO Metric Coarse (M) | Nut Tolerance: 6HX | 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 - Non-alloy, cast & free cutting (~ 0.75 %C): Annealed | Stainless Steel - Austenitic: Age Hardened | Aluminum & Magnesium, wrought alloy - Non Heat Treatable | Aluminum & Magnesium, wrought alloy - Heat Treatable: Age Hardened | Aluminum & Magnesium, cast alloy 12% Si - Non Heat Treatable | Copper & Copper alloys (Brass/Bronze) - Bronze (CuSn)