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 / M3.5 × 0.6 For plastics ㉔ PL1 TPLM3.5H3 HT P5 52 5 3P ④-118Thread forming taps1234OL+RZOLRZP53.5HPROG55254P⑥ -42Standard23SPSPP3.5HSPP15252.5P① -37for dry tapping59⑲OLRZP63.5HPG6⑥ -42 +SP SNPP3.5H ① -55 High performance 1234 HP+RZ HRZP53.5HP RO G5 52 5 4P ⑥ -48 TMa4ps SP 1.5P SY3.5HPNEBA 1.5P ① -56 thread forming taps 59⑲ HRZP53.5HB 2P ⑥ -48 PO POQ3.5H PO P2 5P ③ -13 HRZP63.5HP G6 4P ⑥ -48 TMa5ps +PO PNPQ3.5H ③ -30 HRZP63.5HB 2P ⑥ -48123HTTNMQ3.5H5HTP25255P④ -6For deep hole use234⑬S-SPSSMP3.5H-3SPP15252.5P①-121 TNMQ3.5H1 1.5P ④ -6 1234 S-PO PSMQ3.5H PO P2 52 5 5P ③ -73 TMa6ps Oversize 23 SP SPQ3.5H SP P2 52 5 2.5P ① -37 Oversize 234⑬ S-SP SSMQ3.5H SP P2 52 5 2.5P ①-121SPR3.5HP3① -37Nut taps12NTNH23.5HHTⅡb952.625P⑦ -27 TMa8ps PO SPS3.5H P4POR3.5HPOP3 ① -375P③ -13Taps / M3.5 × 0.35POS3.5HP4③ -13Standard23 SP SPP3.5D SP P1 52 5 2.5P ① -37 123 HT TNMR3.5H5 HT P3 52 5 5P ④ -6 PO POQ3.5D PO P2 5P ③ -13 MT1a0ps TNMR3.5H1 1.5P ④ -6 123 HT TNMQ3.5D5 HT P2 52 5 5P ④ -6TNMS3.5H5P45P④ -6TNMQ3.5D11.5P④ -6 TNMS3.5H1 1.5P ④ -6 Thread forming taps ⑱⑲㉑ N-RS NRSM53.5DP RO G5 52 5 4P ⑥ -28 MT1a2ps For left hand threads 123 HT LH TNMQ3.5H5-L HT P2 52 5 5P ④ -64 for non-ferrousmaterialsTNMQ3.5H1-L1.5P④ -64 NRSM53.5DB 2P ⑥ -28NRSM63.5DPG64P⑥ -28 Oxidizing 123 SP OX SPP3.5HX SP P1 52 5 2.5P ① -63 NRSM63.5DB 2P ⑥ -28 M1-MT8a.5ps PO OXFor soft structural steels12E-SP POQ3.5HX PO P2 5P ③ -34 Taps / M4.5 × 0.75ESHMP3.5HSPP15252.5P①-128 Thread forming taps 12 N+RZ NRZP53.5HP RO G5 52 5 4P ⑥ -15 Standard 23 SP SPQ4.5J SP P2 60 5.5 2.5P ① -37 M9-MT2a4ps for steels NRZP53.5HB 2P ⑥ -15 PO POQ4.5J PO 5P ③ -13 NRZP63.5HP G6 4P ⑥ -15 123 HT TNMQ4.5J53 HT P2 60 5.5 5P ④ -7 NRZP63.5HB 2P ⑥ -15 TNMQ4.5J13 1.5P ④ -7 M25-MT4a8ps NRZP73.5HP G7 4P ⑥ -15 For medium hardness carbon steels 345 MHSL 1109101045 SL P3 70 5.5 5P ② -4 NRZP73.5HB 2P ⑥ -15 Long 345 MHSL 2109101045 SL P3 100 5.5 5P ② -4 For medium hardness carbon steels 345 MHSL 1109101038 SL P3 63 5 5P ② -4 Nut taps 12 NT NH24.5J HT Ⅱb 105 3.3 25P ⑦ -27 M50-MT1a0p0s Long 345 MHSLFor stainless steels2349SU+SP 2109101038 SL P3 100 5 5P ② -4SUPP3.5HSPP15252.5P① -98Taps / M4.5 × 0.5 For tUhrneiTfaiaedpdss 12349 SU-PO PUMQ3.5H PO P2 52 5 5P ③ -60 Standard 23 SP SPP4.5G SP P1 60 5.5 2.5P ① -37129SU-HTTUMQ3.5H4HTP25254P④ -88POPOQ4.5GPOP25P③ -13 TUMQ3.5H1 1.5P ④ -88 123 HT TNMQ4.5G5 HT P2 60 5.5 5P ④ -7 For WhtihtwrTeoaardtphss Oversize 2349 SU+SP SUPR3.5H SP P3 52 5 2.5P ① -98 TNMQ4.5G1 1.5P ④ -7For hard-to-machine materials12349SU2-SPSU2MQ3.5HSPP25253P①-114Oxidizing123SP OXSPP4.5GXSPP1605.52.5P① -63 For oSTncrseeawwitpnhgresm(aadcsShuinsMeeds ) For cast irons ⑫⑬ FC-HT TY3.5HRAEN5 HT P3 52 5 5P ④ -92 Taps / M5.5 × 0.9TY3.5HRAENA1.5P④ -92Carbide⑫⑬⑯N-CT FCTCNR3.5H3HTP34843P⑤ -11Standard23SP SPQ5.5L SP P2 62 6 2.5P ① -38 TCNR3.5H1 1.5P ⑤ -11 PO POQ5.5L PO 5P ③ -14 For Pipe thTreaadpss For aluminum ⑮⑯⑰⑱ AL+SP ASHPQ3.5H SP P2 52 5 2.5P ①-134⑲⑳㉑AL-SP 1.5PSY3.5HQLENA1.5P①-135 123 HT TNMQ5.5L5 HT P2 62 6 5P ④ -7TNMQ5.5L11.5P④ -7 FpoirpeAmtherrTeicaaadpnss ⑱⑲㉑ LA-HT TY3.5HQLEN5 HT P2 52 5 5P ④-108 Nut taps 12 NT NH25.5L HT Ⅱb 115 4.1 24P ⑦ -27TY3.5HQLENA1.5P④-108Carbide⑲㉑N-CT LATCNR3.5H3AHTP34843P⑤ -3Taps / M5.5 × 0.75 For MtinhiraTetauadrpess Thread forming taps ⑱⑲㉑ N+RSfor non-ferrousmaterials TCNR3.5H1A 1.5P ⑤ -3 StandardNRSP53.5HPROG55254P⑥ -27NRSP53.5HB2P⑥ -27123HT TNMQ5.5J5 HT P2 62 6 5P ④ -7TNMQ5.5J11.5P④ -7 NRSP63.5HP G6 4P ⑥ -27 NRSP63.5HB 2P ⑥ -27 NRSP73.5HP G7 4P ⑥ -27 Sizes-50 Codes shown in ( ) are available while supplies last.