Seco's range of 280 helix point and 73 straight threading taps for through holes are available for general purpose and material-specific applications. Most come with or without internal coolant in both helix point and straight fluted taps. The tap dimension range for general purpose covers 2 to 36 mm in thread profiles M, MF, UNC, UNF, G, NPT and NPTF. For material-specific (ISO P, M and N) helix point taps, the range is from 1 to 30 mm in thread profiles M and MF. Straight fluted (ISO-K) thread profiles range from 3 to 42 mm in thread profiles M, MF, UNC, UNF and G.