Nominal sizeNominal size TPITPI Pitch diameterPitch diameter Lead angleLead angle SNR0006H06-2SNR0006H06-2 SNR0006H06-3SNR0008H06-2 SNR0008H06-2SNR0010K11 SNR0008H06-3SNR0010K11-2 SNR0010K11-2SNR0013L11 SNR0013L11-2 SNR0013L11-2 SNR0016M16 SNR0016M16 SNR0016M16-2 SNR0016M16-2 CNR0020P16 CNR0020P16 CNR0025R16 CNR0025R16 SNR0006K06SC-2 CNR0032S16 SNR0006K06SC-3 SNR0006H06SC-2 SNR0008K06SC-2 SNR0008H06SC-2 SNR0008K06SC-3 SNR0010K11 SNR0010M11SC SNR0010K11-2 SNR0010M11SC-2 SNR0012P11SCSNR0012L11 SNR0012P11SC-2SNR0012L11-2 SNR0016R16SCSNR0016M16 SNR0016R16SC-2SNR0016M16-2 TSNR0016Q16TSNR0016Q16 TCNR0020R16DTTCNR0020R16DT TCNR0025S16DTTCNR0025S16DT GradeInsertExt. ToolholderInt. ToolholderThreadingGroovingMiniature toolMilling cutterEndmillDrilling toolTooling SystemUser's GuideIndex User’s Guide - Technical Reference A Unified fine screw thread (UNF) Shank material Steel shank Carbide shank “Tsuppari-Ichiban” B Insert size 6IR 11IR 16IR 6IR 11IR 16IR 16IR Holder Cat. No. Insert Cat.No. C (IR24UN) 3/8-24UNF 24 8.84 2º11´ IRA60 (IR20UN)7/16-20UNF2010.292º15´IRA60 D (IR20UN) 1/2-20UNF 20 11.87 1º57´ IRA60 (IR18UN)9/16-18UNF1813.371º55´IRA60 E (IR18UN) 5/8-18UNF 18 14.96 1º43´ IRA60 3/4-16UNF 16 18.02 1º36´ IR16UN7/8-14UNF1421.051º34´IR14UN F 1-12UNF 12 24.03 1º36´ IR12UN 1 1/8-12UNF 12 27.2 1º25´ IR12UN 1 1/4-12UNF 12 30.38 1º16´ IR12UN1 3/8-12UNF1233.551º09´IR12UN G 1 1/2-12UNF 12 36.73 1º03´ IR12UN Unified extra fine screw thread (UNEF)) Shank material Steel shankInsert size6IR11IR 16IR Carbide shank “Tsuppari-Ichiban”6IR11IR16IR16IR H Holder Cat. No. Insert Cat.No.3/8329.011º61´IR32UN I 7/16 28 10.52 1º57´ IR28UN 1/2 28 12.11 1º37´ IR28UN 9/16 24 13.6 1º42´ IR24UN5/82415.191º27´IR24UN11/162416.771º15´IR24UN J 3/4 20 18.22 1º27´ IR20UN 13/16 20 19.81 1º17´ IR20UN 7/8 20 21.4 1º08´ IR20UN 15/16 20 22.99 1º01´ IR20UN12024.570º94´IR20UN11/161826.070º99´IR18UN K 1 1/8 18 27.66 0º93´ IR18UN 1 3/16 18 29.25 0º88´ IR18UN 1 1/4 18 30.83 0º84´ IR18UN15/161832.420º79´IR18UN13/81834.010º76´IR18UN L 1 7/16 18 35.6 0º72´ IR18UN 1 1/2 18 37.18 0º69´ IR18UN 1 9/16 18 38.77 0º66´ IR18UN15/81840.360º64´IR18UN1 11/161841.950º61´IR18UN M Note : The above tables show correspondence of internal toolholders at the time of setting clearance between thread and toolholder to 3 mm (1 mm in case of SN type) and the finishing stock to 0.1 mm. Tungaloy L053