Flute Class Flute Class Icons of main materials 1 Low carbon steel   2 Medium carbon steel   3 High carbon steel   4 Alloy steel   5 Thermal refined stee(l 25~35HRC)   6 Thermal refined stee(l 35~45HRC)    7 Thermal refined stee(l 45~55HRC)   8 Thermal refined stee(l 50~63HRC)   9 Stainless steel    Tool steel   ⓫ Cast steel   ⓬ Cast iron    ⓭ Ductile cast iron   ⓮ Copper   ⓯ Brass   ⓰ Brass casting   ⓱ Bronze   ⓲ Wrought aluminum   ⓳ Aluminum alloy casting    ⓴ Magnesium alloy    Zinc alloy   ㉒ Titanium alloy   ㉓ Nickel base alloy   ㉔ Thermosetting plastic   ㉕ Thermoplastic resin  TMa2ps Tap selection Mainmaterial Symbol Code L Ds ℓc Productpage Tap selection Mainmaterial Symbol Code L Ds ℓc Productpage Note1 Note1 TMa3ps Taps / M50 × 5 Taps / M55 × 4 Standard 123 HT TH2050W5 HT Ⅱ 195 40 5P ④ -17 Standard 123 HT TH2055U5 HT Ⅱ 180 44 5P ④ -18 TH2050W1 1.5P ④ -17 TH2055U1 1.5P ④ -18 TMa4ps Taps / M50 × 4 Taps / M55 × 3 TMa5ps Standard 123 HT TH2050U5 HT Ⅱ 180 40 5P ④ -17 StandardTH2050U11.5P④ -17123 HT TH2055S5 HT Ⅱ 180 44 5P ④ -18TH2055S11.5P④ -18 Taps / M50 × 3 Taps / M55 × 2 TMa6ps Standard 123 HT TH2050S5 HT Ⅱ 180 40 5P ④ -17 Standard 123 HT TH2055Q5 HT Ⅱ 135 44 5P ④ -18 TH2050S1 1.5P ④ -17 TH2055Q1 1.5P ④ -18 TMa8ps For left handthreads 123 HT LH TH2050S5-L HT Ⅱ 180 40 5P ④ -69TH2050S1-L1.5P④ -69Taps / M55 × 1.5 MT1a0ps Taps / M50 × 2Standard 123 HT Standard 123 HT TH2055O5 HT Ⅱ 135 44 5P ④ -18TH2055O11.5P④ -18TH2050Q5HTⅡ130405P④ -17TH2050Q11.5P④ -17Taps / M56 × 5.5 MT1a2ps For left handthreads 123 HT LH TH2050Q5-L HT Ⅱ 130 40 5P ④ -69 StandardTH2050Q1-L1.5P④ -6923 SP SPS056X SP P4 205 44 2.5P ① -41123HTTH2056X5HTⅡ205445P④ -18 M1-MT8a.5ps Taps / M50 × 1.5Standard 23 PO POS050O PO P4 145 40 5P ③ -17 Taps / M56 × 4 TH2056X1 1.5P ④ -18 123 HT TH2050O5 HT Ⅱ 130 40 5P ④ -17 Standard 123 HT TH2056U5 HT Ⅱ 180 44 5P ④ -18 M9-MT2a4ps TH2050O1 1.5P ④ -17 TH2056U1 1.5P ④ -18 For left handthreads 123 HT LH TH2050O5-L HT Ⅱ 130 40 5P ④ -69TH2050O1-L1.5P④ -69Taps / M56 × 3 M25-MT4a8ps Taps / M50 × 1 Standard 123 HT TH2056S5 HT Ⅱ 180 44 5P ④ -18TH2056S11.5P④ -18 StandardM50-MT1a0p0s 123 HT TH2050M5 HT Ⅱ 130 40 5P ④ -17TH2050M11.5P④ -17Taps / M56 × 2 For tUhrneiTfaiaedpdss Taps / M52 × 5Standard 23 SP123HT Standard 123 HT TH2056Q5 HT Ⅱ 135 44 5P ④ -18TH2056Q11.5P④ -18SPS052WSPP4195422.5P① -41TH2052W5HTⅡ195425P④ -17Taps / M56 × 1.5 For WhtihtwrTeoaardtphss Taps / M52 × 4 TH2052W1 1.5P ④ -17 Standard 123 HT TH2056O5 HT Ⅱ 135 44 5P ④ -18TH2056O11.5P④ -18 For oSTncrseeawwitpnhgresm(aadcsShuinsMeeds ) Standard 123 HT TH2052U5 HT Ⅱ 180 42 5P ④ -17 Taps / M58 × 4TH2052U11.5P④ -17Standard123HT TH2058U5 HT Ⅱ 180 46 5P ④ -18 Taps / M52 × 3 TH2058U1 1.5P ④ -18 For Pipe thTreaadpss Standard 123 HT TH2052S5 HT Ⅱ 180 42 5P ④ -17 Taps / M58 × 3 TH2052S1FpoirpeAmtherrTeicaaadpnssTaps / M52 × 21.5P④ -17Standard 123 HT TH2058S5 HT Ⅱ 180 46 5P ④ -18TH2058S11.5P④ -18 For MtinhiraTetauadrpess Standard 123 HT TH2052Q5 HT Ⅱ 130 42 5P ④ -18 Taps / M58 × 2TH2052Q11.5P④ -18Standard123HTTaps / M52 × 1.5 TH2058Q5 HT Ⅱ 135 46 5P ④ -18TH2058Q11.5P④ -18 Standard 123 HT TH2052O5 HT Ⅱ 130 42 5P ④ -18 TH2052O1 1.5P ④ -18 Sizes-92 Codes shown in ( ) are available while supplies last.