THREADING THREADING MMT STANDARD OF DEPTH OF CUT EXTERNAL (RADIAL INFEED) yISO Metric (mm) Pitch(mm)TotalCuttingDepth12 3 4 5 Number of Passes Insert Type67891011121314G-class ground insertsM-class inserts with3-D chip breakers 0.5 0.31 0.10 0.08 0.07 0.06 MMT16ER050ISO – 0.75 0.46 0.16 0.14 0.10 0.06 MMT16ER075ISO – 1.0 0.61 0.18 0.15 0.12 0.10 0.06 MMT16ER100ISO MMT16ER100ISO-S 1.25 0.77 0.19 0.17 0.14 0.11 0.10 0.06 MMT16ER125ISO MMT16ER125ISO-S 1.5 0.92 0.22 0.21 0.17 0.14 0.12 0.06 MMT16ER150ISO MMT16ER150ISO-S 1.75 1.07 0.22 0.21 0.16 0.13 0.11 0.09 0.09 0.06 MMT16ER175ISO MMT16ER175ISO-S 2.0 1.23 0.24 0.23 0.17 0.16 0.14 0.12 0.11 0.06 MMT16ER200ISO MMT16ER200ISO-S 2.5 1.53 0.26 0.23 0.19 0.17 0.15 0.13 0.12 0.11 0.11 0.06 MMT16ER250ISO MMT16ER250ISO-S 3.0 1.84 0.27 0.25 0.20 0.18 0.16 0.14 0.13 0.12 0.12 0.11 0.10 0.06 MMT16ER300ISO MMT16ER300ISO-S 3.5 2.15 0.33 0.30 0.24 0.21 0.18 0.17 0.15 0.14 0.14 0.12 0.11 0.06 MMT22ER350ISO – 4.0 2.45 0.34 0.31 0.24 0.22 0.19 0.17 0.16 0.14 0.14 0.13 0.12 0.12 0.11 0.06 MMT22ER400ISO – 4.5 2.76 0.38 0.34 0.28 0.24 0.22 0.20 0.18 0.16 0.16 0.15 0.14 0.13 0.12 0.06 MMT22ER450ISO – 5.0 3.07 0.42 0.38 0.32 0.27 0.24 0.22 0.20 0.18 0.18 0.17 0.16 0.15 0.12 0.06 MMT22ER500ISO – yAmerican UN (inch) Pitch Total Number of Passes Insert Type (thread/ Cuttinginch)Depth12 3 4 5 6 7 8 9 10 11 12 13 14 G-class ground inserts M-class inserts with3-D chip breakers 32 .019 .007 .006 .004 .002 MMT16ER320UN – 28 .022 .007 .006 .004 .003 .002 MMT16ER280UN – 24 .026 .007 .006 .006 .005 .002 MMT16ER240UN – 20 .031 .008 .007 .005 .005 .004 .002 MMT16ER200UN – 18 .034 .009 .008 .006 .005 .004 .002 MMT16ER180UN – G 16 .038 .009 .008 .006 .005 .004 .004 .00214.044.009.008.006.005.005.005.004.002 MMT16ER160UN MMT16ER160UN-SMMT16ER140UNMMT16ER140UN-S 13 .047 .010 .009 .007 .006 .005 .005 .003 .002 MMT16ER130UN – 12 .051 .011 .009 .007 .006 .006 .005 .005 .002 MMT16ER120UN MMT16ER120UN-S 11 .056 .011 .009 .007 .006 .006 .006 .005 .004 .002 MMT16ER110UN – 10 .061 .011 .009 .007 .006 .006 .006 .005 .005 .004 .002 MMT16ER100UN – 9 .068 .013 .011 .009 .007 .006 .006 .005 .005 .004 .002 MMT16ER090UN – 8 .077 .014 .012 .009 .007 .006 .006 .006 .006 .005 .004 .002 MMT16ER080UN – 7 .087 .015 .013 .011 .009 .008 .007 .006 .006 .005 .005 .002 MMT22ER070UN – 6 .102 .017 .014 .011 .010 .008 .007 .007 .006 .006 .005 .005 .004 .002 MMT22ER060UN – 5 .123 .017 .015 .012 .011 .009 .009 .008 .007 .007 .007 .007 .006 .006 .002 MMT22ER050UN – yWhitworth for BSW, BSP (inch) Pitch Total Number of Passes Insert Type (thread/ Cuttinginch)Depth12 3 4 5 6 7 8 9 10 11 12 13 14 G-class ground inserts M-class inserts with3-D chip breakers 28 .023 .007 .006 .004 .004 .002 MMT16ER280W – 26 .025 .007 .006 .005 .005 .002 MMT16ER260W – 20 .032 .008 .007 .006 .005 .004 .002 MMT16ER200W – 19 .034 .008 .007 .006 .006 .005 .002 MMT16ER190W MMT16ER190W-S 18 .035 .010 .007 .006 .005 .005 .002 MMT16ER180W – 16 .040 .008 .007 .006 .005 .004 .004 .004 .002 MMT16ER160W – 14 .046 .009 .008 .007 .006 .005 .005 .004 .002 MMT16ER140W MMT16ER140W-S 12 .054 .011 .010 .008 .006 .006 .006 .005 .002 MMT16ER120W – 11 .058 .011 .009 .008 .007 .006 .006 .005 .005 .002 MMT16ER110W MMT16ER110W-S 10 .064 .011 .010 .008 .007 .006 .006 .005 .005 .004 .002 MMT16ER100W – 9 .071 .011 .010 .008 .007 .006 .006 .006 .005 .005 .005 .002 MMT16ER090W – 8 .080 .012 .011 .009 .007 .007 .006 .006 .006 .005 .005 .004 .002 MMT16ER080W – 7 .091 .013 .013 .010 .009 .008 .007 .007 .006 .006 .006 .004 .002 MMT22ER070W – 6 .107 .014 .013 .011 .009 .008 .008 .007 .007 .006 .006 .006 .005 .005 .002 MMT22ER060W – 5 .128 .017 .016 .014 .011 .010 .009 .009 .008 .007 .007 .007 .006 .005 .002 MMT22ER050W – Note 1) · Set the finishing allowance on a diameter at approx. .004 inch when using a full form insert. · Please note the cutting depth and the number of passes when a nose radius of a partial or semi-full form insert or of an internal threading insert is small to prevent damage to the insert nose. · Please set the cutting depth sufficiently deep enough on materials such as hardened steel or austenitic stainless steel to help prevent premature wear and chipping caused by the outer layer of the material. G014