Thread Milling Tools UN INTERNAL ANSI B1.1-1982 UN NUT 1/4P 60 1/8P UN SCREW LEFT HAND CUTTING, CNC CODE: M04 THREAD LENGTH – UP TO 2D D = NOMINAL THREAD SIZE THREAD SIZE PITCH ORDERING L L1 D1 D2 NO. OF TPI CODE FLUTES COARSE UNC FINE UNF 1 1-72 72 TMD06014L3 72UN 57 3.8 6 1.44 3 2 1-64 2-64 64 TMD06014L3 64UN 57 3.9 6 1.40 3 3 2-56 3-56 56 TMD06016L4 56UN 57 4.6 6 1.66 3 4 3-48 4-48 48 TMD06018L5 48UN 57 5.4 6 1.88 3 5 4-40 40 TMD06021L6 40UN 57 6.2 6 2.12 3 6 5-40 6-40 40 TMD06024L7 40UN 57 7.1 6 2.46 3 7 8-36 36 TMD06033L8 36UN 57 8.8 6 3.31 3 8 6-32 32 TMD06025L7 32UN 57 7.8 6 2.57 3 9 8-32 10-32 32 TMD06032L10 32UN 57 10.3 6 3.22 3 10 1/4"-28 28 TMD06052L14 28UN 57 14.0 6 5.20 3 11 10-24 24 TMD06035L10 24UN 57 10.4 6 3.55 3 12 5/16"-24 24 TMD08066L16 24UN 64 16.7 8 6.65 3 13 1/4"-20 7/16"-20 20 TMD06048L13 20UN 57 13.7 6 4.85 3 14 7/16"-20 20 TMD08079L24 20UN 64 24.0 8 7.95 3 15 5/16" 18 TMD06059L16 18UN 57 16.5 6 5.95 3 16 3/8" 16 TMD08069L20 16UN 63 20.0 8 6.90 3 17 7/16"-14 14 TMD08079L23 14UN 63 23.5 8 7.95 3 18 19 MINIATURE TOOLS FOR HARD MATERIAL – UP TO 62 HRc 20 21 22 23 24 21