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 MainmaterialSymbol Code L Ds ℓc Productpage Note1 Note1 For aluminum ⑮⑯⑰⑱ AL+SP ASHPQ2.3E SP P2 42 3 2.5P ①-134 CoatingTMa3ps⑲⑳㉑AL-SP 1.5PSY2.3EQLENA1.5P①-13512349⑲㉑AU+SP VSAPQ2.5F SP P2 46 3 2.5P ① -8412349⓾VUPO1102101029POP25035P③ -4 ⑱⑲㉑ LA-HT TY2.3EQLEN5 HT P2 42 3 5P ④-108 1234 PO V VPOQ2.5F PO P2 46 3 5P ③ -48 TY2.3EQLENA 1.5P ④-108 129⑭ R+V RVP52.5FP RO G5 46 3 4P ⑥ -39 TMa4ps Carbide ⑲㉑ N-CT LA TCNR2.3E3A HT P3 42 3 3P ⑤ -3 ⑱⑲㉑ RVP52.5FB 2P ⑥ -39 TCNR2.3E1A 1.5P ⑤ -3 RVP62.5FP G6 4P ⑥ -39 TMa5ps Thread forming taps ⑱⑲㉑ N+RSfor non-ferrousmaterials NRSP42.3EP RO G4 42 3 4P ⑥ -26NRSP42.3EB2P⑥ -26Long RVP62.5FB 2P ⑥ -3923LS-SPSPFP2.5FL07SPP17032.5P① -87 NRSP52.3EP G5 4P ⑥ -26 LS-PO POFQ2.5FL07 PO P2 5P ③ -51 TMa6ps NRSP52.3EB 2P ⑥ -26 123 LS-HT TNFP2.5F507 HT P1 70 3 5P ④ -71NRSP62.3EPG64P⑥ -26TNFP2.5F1071.5P④ -71 NRSP62.3EB 2P ⑥ -26 Thread forming taps 12 N+RZ NRZP52.5FP RO G5 46 3 4P ⑥ -14 TMa8ps For plastics ㉔ PL1 TPLM2.3E3 HT P4 42 3 3P ④-118 for steelsThread forming taps1234OL+RZOLRZP42.3EPROG44234P⑥ -42 NRZP52.5FB 2P ⑥ -14NRZP62.5FPG64P⑥ -14 for dry tapping 59⑲ OLRZP52.3EP G5 ⑥ -42 NRZP62.5FB 2P ⑥ -14 MT1a0ps High performance 1234 HP+RZ HRZP42.3EB RO G4 42 3 2P ⑥ -48 For high carbon steels 235 HC+PO PCPQ2.5F PO P2 46 3 5P ③ -76thread forming taps59⑲HRZP52.3EBG5⑥ -48For medium hardness carbon steels345MHSL1109101029SLP35035P② -4 Torqueless threadforming tapsSeamless129 SURZ SURZ42.3EB RO G4 42 3 2P ⑥ -60 Long 345 MHSL 2209101029 SL P3 100 3 5P ② -4 MT1a2ps For deep hole use 234⑬ S-SP1234S-PO SSMP2.3E SP P1 42 3 2.5P ①-121 Carbide taps for ultra hard materials 8 UH-CT UHCR2.5F5 HT P3 44 4 5P ⑤ -28PSMQ2.3EPOP24235P③ -73For stainless steels2349SU+SPSUPP2.5FSPP14632.5P① -98 Oversize 234⑬ S-SP SSMR2.3E SP P3 42 3 2.5P ①-121 12349 SU+PO PUPQ2.5F PO P2 46 3 5P ③ -60 M1-MT8a.5ps Nut taps 12 NT NH22.3E HT Ⅱb 80 1.7 25P ⑦ -27Taps / M2.3 × 0.25 129 SU-HT TUMQ2.5F4 HT P2 46 3 4P ④ -88TUMQ2.5F11.5P④ -88Oversize2349SU+SPSUPQ2.5FSPP24632.5P① -98 M9-MT2a4ps Standard 23 SP SPP2.3B SP P1 42 3 2.5P ① -37123HTTNMP2.3B5HTP14235P④ -6 SUPR2.5F P3 ① -9812349SU+POPUPR2.5FPOP34635P③ -60 TNMP2.3B1 1.5P ④ -6 For cast Carbide ⑫⑬⑯ N-CT FC TCNR2.5F3 HT P3 44 3 3P ⑤ -11 M25-MT4a8ps Taps / M2.5 × 0.45 irons TCNR2.5F1 1.5P ⑤ -11For aluminum⑮⑯⑰⑱AL+SPASHPQ2.5FSPP24632.5P①-134 General purpose 1 R-Y RY2.5F3 RO - 44 3 3P ⑥ -63 ⑲⑳㉑ AL-SP 1.5P SY2.5FQLENA 1.5P ①-135 M50-MT1a0p0s Standard 23 SP SPP2.5F SP P1 46 3 2.5P ① -37 ⑱⑲㉑ LA-HT TY2.5FQLEN5 HT P2 46 3 5P ④-108 +SP SNPP2.5F ① -55 TY2.5FQLENA 1.5P ④-108 For tUhrneiTfaiaedpdss SP 1.5P SY2.5FPNEBA 1.5P ① -56 Carbide ⑲㉑ N-CT LA TCNR2.5F3A HT P3 44 3 3P ⑤ -3POPOQ2.5FPOP25P③ -13TCNR2.5F1A1.5P⑤ -3 123 HT TNMQ2.5F5 HT P2 46 3 5P ④ -6 Thread forming taps ⑱⑲㉑ N+RS NRSP52.5FP RO G5 46 3 4P ⑥ -26 For WhtihtwrTeoaardtphss TNMQ2.5F1 1.5P ④ -6 for non-ferrousmaterialsOversize23SPSPQ2.5FSPP24632.5P① -37 NRSP52.5FB 2P ⑥ -26NRSP62.5FPG64P⑥ -26 SPR2.5F P3 ① -37 NRSP62.5FB 2P ⑥ -26 For oSTncrseeawwitpnhgresm(aadcsShuinsMeeds ) SPS2.5F P4 ① -37 Short chamfer ⑲⑳㉑ MG-HT TMGMQ2.5F1 HT P2 46 3 1P ④-116POPOR2.5FPOP35P③ -13For plastics㉔PL1TPLM2.5F3HTP44633P④-118 POS2.5F P4 ③ -13 Thread forming taps 1234 OL+RZ OLRZP52.5FP RO G5 46 3 4P ⑥ -42 For Pipe thTreaadpss 123 HT TNMR2.5F5 HT P3 46 3 5P ④ -6 for dry tapping 59⑲ OLRZP62.5FP G6 ⑥ -42TNMR2.5F11.5P④ -6High performance1234HP+RZHRZP52.5FBROG54632P⑥ -48 TNMS2.5F5 P4 5P ④ -6 thread forming taps 59⑲ HRZP62.5FB G6 ⑥ -48 FpoirpeAmtherrTeicaaadpnss For left hand threads 23 SP LH TNMS2.5F1 1.5P ④ -6 Torqueless thread Short chamfer 1239⑲㉑ SC-TL-RZ SRZM52.5F1 RO G5 46 3 1P ⑥ -58SPP2.5F--LSPP14632.5P① -77forming tapsSeamless129SURZSURZ42.5FBROG44632P⑥ -60 For MtinhiraTetauadrpess Oxidizing 123 HT LH TNMQ2.5F5-L HT P2 46 3 5P ④ -64 For deep hole use 234⑬ S-SP SSMP2.5F SP P1 46 3 2.5P ①-121TNMQ2.5F1-L1.5P④ -641234S-POPSMQ2.5FPOP24635P③ -73123SP OXSPP2.5FXSPP14632.5P① -63Oversize234⑬S-SPSSMQ2.5FSPP24632.5P①-121 PO OX POQ2.5FX PO P2 5P ③ -34 SSMR2.5F P3 ①-121 Nut taps 12 NT NH22.5F HT Ⅱb 85 2 24P ⑦ -27 Sizes-48 Codes shown in ( ) are available while supplies last.