Machining > Threading > Taps > Metric - Straight Flute Taps | Suttons Straight Flute Taps - M - Bottoming | Dimensions | d1: M18 | d2 (mm): 14 | l1 (mm): 112 | l2 (mm): 37 | l4 (mm): 14 | sq: 11.2 | z: 4 | Drill Size (mm): 15.5 (drill) | Pitch (mm): 2.5 (pitch) | Features | General purpose use | Suitable for materials up to 1000N/mm2 | Suitable for both hand and machine operations | Depths up to approx. 1 x d1 | Specifications | Designation: N (for normal general purpose type materials) | Material: High Speed Steel (HSS) | Finish: Bright | Max Cut Depth: 1xD | Shank Form: Reinforced Shank (with square drive) | X: als | Type: Straight Flute | Standard: ISO529 | Thread Form: ISO Metric Coarse (M) | Nut Tolerance: ISO 2 / 6H | Lead: Bottoming | 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 (~ 0.45 %C): Quenched & Tempered | Steel - Non-alloy, cast & free cutting (~ 0.75 %C): Annealed | Steel - Low alloy & cast