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 MainmaterialSymbol Code L Ds ℓc Productpage Tap selection MainmaterialSymbol Code L Ds ℓc Productpage Note1 Note1 TMa3ps Taps / No.0-80UNF Thread forming taps for dry tapping 123459⑲ OL-RZ OLRZM4UN2DP RO G4 42 3 4P ⑥ -43High performance thread forming taps123459⑲HP-RZHRZM4UN2DBROG44232P⑥ -50 Standard 23 PO123HT POPUN0B PO P1 36 3 5P ③ -17TNMPUN0B5HTP13635P④ -21Taps / No.3-48UNC TMa4ps TNMPUN0B1 1.5P ④ -21 Standard 23 SP SPPUN3F SP P1 46 3 2.5P ① -41 Oxidizing 123 PO OX POPUN0BX PO P1 36 3 5P ③ -35 PO POPUN3F PO 5P ③ -17 TMa5ps Thread forming taps for ⑱⑲㉑ N-RSnon-ferrous materials NRSM5UN0BP RO G5 36 3 4P ⑥ -29NRSM5UN0BB2P⑥ -29 123 HT TNMPUN3F5 HT P1 46 3 5P ④ -21TNMPUN3F11.5P④ -21 TMa6ps Taps / No.1-64UNC For stainless steels 2349 SU-SP SUMPUN3F SP P1 46 3 2.5P ①-100Thread forming taps⑱⑲㉑N-RSNRSM4UN3FPROG44634P⑥ -29Standard23SPSPPUN1DSPP14232.5P① -41for non-ferrousmaterialsNRSM4UN3FB2P⑥ -30 PO POPUN1D PO 5P ③ -17 NRSM5UN3FP G5 4P ⑥ -30 TMa8ps 123 HT TNMPUN1D5 HT P1 42 3 5P ④ -21 NRSM5UN3FB 2P ⑥ -30TNMPUN1D11.5P④ -21Thread forming taps for dry tapping123459⑲OL-RZOLRZM4UN3FPROG44634P⑥ -43 MT1a0ps Taps / No.1-72UNF High performance thread forming taps 123459⑲ HP-RZ HRZM4UN3FB RO G4 46 3 2P ⑥ -50Standard23POPOPUN1CPOP14235P③ -17Taps / No.3-56UNF 123 HT TNMPUN1C5 HT P1 42 3 5P ④ -21 Standard 23 SP SPPUN3E SP P1 46 3 2.5P ① -41 MT1a2ps Thread forming taps for ⑱⑲㉑ N-RS TNMPUN1C1 1.5P ④ -21NRSM5UN1CPROG54234P⑥ -29 PO POPUN3E PO 5P ③ -17123HTTNMPUN3E5HTP14635P④ -21 non-ferrous materials NRSM5UN1CB 2P ⑥ -29 TNMPUN3E1 1.5P ④ -21 M1-MT8a.5ps Taps / No.2-56UNC Thread forming taps for dry tapping 123459⑲ OL-RZ OLRZM4UN3EP RO G4 46 3 4P ⑥ -43High performance thread forming taps123459⑲HP-RZHRZM4UN3EBROG44632P⑥ -50 StandardM9-MT2a4ps 23 SPPO SPPUN2E SP P1 42 3 2.5P ① -41POPUN2EPO5P③ -17Taps / No.4-40UNC 123 HT TNMPUN2E5 HT P1 42 3 5P ④ -21 Standard 23 SP SPPUN4H SP P1 46 4 2.5P ① -41 TNMPUN2E1 1.5P ④ -21 PO POQUN4H PO P2 5P ③ -17 M25-MT4a8ps Oxidizing 123 SP OX SPPUN2EX SP P1 42 3 2.5P ① -64 123 HT TNMQUN4H5 HT P2 46 4 5P ④ -21 PO OX POPUN2EX PO 5P ③ -35 TNMQUN4H1 1.5P ④ -21 For stainless steels 2349 SU-SP SUMPUN2E SP P1 42 3 2.5P ①-100 Oversize 123 HT TNMRUN4H5 HT P3 46 4 5P ④ -21 M50-MT1a0p0s 12349 SU-PO PUMPUN2E PO P1 42 3 5P ③ -62 TNMRUN4H1 1.5P ④ -21 Thread forming taps ⑱⑲㉑ N-RS NRSM4UN2EP RO G4 42 3 4P ⑥ -29 Oxidizing 123 SP OX SPPUN4HX SP P1 46 4 2.5P ① -64 For tUhrneiTfaiaedpdss for non-ferrousmaterials NRSM4UN2EB 2P ⑥ -29 PO OX POQUN4HX PO P2 5P ③ -35NRSM5UN2EPG54P⑥ -29Thread forming taps for steels12N-RZNRZM5UN4HBROG54642P⑥ -17 NRSM5UN2EB 2P ⑥ -29 For stainless steels 2349 SU-SP SUMPUN4H SP P1 46 4 2.5P ①-100 For WhtihtwrTeoaardtphss NRSM6UN2EP G6 4P ⑥ -29 12349 SU-PO PUMQUN4H PO P2 46 4 5P ③ -62NRSM6UN2EB2P⑥ -29For castCarbide⑫⑬⑯N-CT FCTCNRUN4H3HTP34433P⑤ -13 NRSM7UN2EP G7 4P ⑥ -29 irons TCNRUN4H1 1.5P ⑤ -13 For oSTncrseeawwitpnhgresm(aadcsShuinsMeeds ) NRSM7UN2EB 2P ⑥ -29 Thread forming taps ⑱⑲㉑ N-RSThread forming taps1234OL-RZfor dry tapping59⑲OLRZM4UN2EPROG44234P⑥ -43for non-ferrousmaterialsOLRZM5UN2EPG5⑥ -43NRSM5UN4HPROG54644P⑥ -30NRSM5UN4HB2P⑥ -30NRSM6UN4HPG64P⑥ -30 For Pipe thTreaadpss High performance 1234 HP-RZ HRZM4UN2EB RO G4 42 3 2P ⑥ -50thread forming taps59⑲HRZM5UN2EBG5⑥ -50 NRSM6UN4HB 2P ⑥ -30NRSM7UN4HPG74P⑥ -30 FpoirpeAmtherTreicaaadpnssFor MtinhiraTetauadrpess Torqueless thread Short chamfer 1239⑲㉑ SC-TL-RZ SRZM4UN2E1 RO G4 42 3 1P ⑥ -58 NRSM7UN4HB 2P ⑥ -30forming tapsSeamless129SURZSURZ4UN2EBROG44232P⑥ -60Thread forming taps1234OL-RZOLRZM5UN4HPROG54644P⑥ -43Taps / No.2-64UNFfor dry tapping59⑲OLRZM6UN4HPG6⑥ -43High performance1234HP-RZHRZM5UN4HBROG54642P⑥ -50Standard23SPSPPUN2DSPP14232.5P① -41thread forming taps59⑲HRZM6UN4HBG6⑥ -50POPOPUN2DPO5P③ -17Torqueless threadShort chamfer1239⑲㉑SC-TL-RZSRZM5UN4H1ROG54641P⑥ -58 123 HT TNMPUN2D5 HT P1 42 3 5P ④ -21 forming taps Seamless 129 SURZ SURZ5UN4HB RO G5 46 4 2P ⑥ -60 TNMPUN2D1 1.5P ④ -21 For helical coil wire ⑱⑲㉑ AL-HT STI TWUN4H1LEB5 HT Ⅰb 52 5 5P ⑦ -5 screw thread inserts TWUN4H1LEBA 1.5P ⑦ -5 Sizes-102 Codes shown in ( ) are available while supplies last.