MMT STANDARD OF DEPTH OF CUT INTERNAL (RADIAL INFEED)

yBSPT(inch)
PitchTotalNumber of PassesInsert Type
(thread inch)Cuttin Depth1 g2345 6 7 8 9G-class ground insertsM-class inserts with 3-D chipbreakers
19.034.009.007.006.005.005 .002MMT11IR190BSPTMMT16IR190BSPTMMT16IR190BSPT-S
14.046.009.008.007.006.005 .005 .004 .002MMT11IR140BSPTMMT16IR140BSPTMMT16IR140BSPT-S
11.058.010.009.008.007.006 .006 .005 .005 .002MMT16IR110BSPTMMT16IR110BSPT-S

yRound DIN 405

(inch)

Pitch (thdTotal CttiNumber of PassesInsert Type
reaung
inch)Depth1234 5678 91011121314G-class ground inserts
10.050.009.008.008.007 .006.005.005.002MMT16IR100RD
8.063.009.008.008.007 .007.006.006.005 .005.002MMT16IR080RD
6.083.010.010.009.009 .008.007.007.006 .006.005.004.002MMT16IR060RD
4.125.013.013.013.012 .011.010.009.009 .008.007.007.006.005.002MMT22IR040RD
SOTrapezoidal 3(mm)
PitchTotalNumber of PassesInsert Type
(mm)Cutting
Depth1234 5678 91011121314G-class ground inserts
1.50.900.230.210.160.13 0.110.06MMT16IR150TR
21.250.290.260.210.17 0.140.120.06MMT16IR200TR
31.750.320.310.240.19 0.180.170.150.13 0.06MMT16IR300TR
42.250.330.320.240.22 0.210.170.160.15 0.140.130.120.06MMT22IR400TR
52.750.350.320.260.24 0.220.210.190.19 0.170.150.140.130.120.06MMT22IR500TR
mericanACME(inch)
Pitch (thread/Total CuttinNumber of PassesInsert Type
inch)g Depth12345678 910 1112 1314G-class ground inserts
12.047.011.009.008.007.006.004.002MMT16IR120ACME
10.060.011.010.008.007.006.006.005.005 .002MMT16IR100ACME
8.072.012.010.009.007.006.006.006.005 .005.004 .002MMT16IR080ACME
6.093.013.012.011.009.008.007.006.006 .005.005 .005.004 .002MMT22IR060ACME
5.110.014.013.012.010.009.008.007.007 .006.006 .006.005 .005.002MMT22IR050ACME
PIuttress Casig(inch)
Pitch (thd/Total CttiNumberofPassesInsert Type
rea inch)ung Depth1 23 456789 10 11G-class ground inserts
5.061.010 .009.007 .006.005.005.005.004.004 .004 .002MMT22IR050APBU
APIRound Casing& Tubing(inch)
PitchTotalNumberofPassesInsert Type
(thread/ inch)Cutting Depth1 23 456789 10 11 12G-class ground inserts
10.056.010 .009.006 .006.005.005.005.004.004 .002MMT16IR100APRD
8.071.010 .009.007 .006.006.006.005.005.005 .005 .005 .002MMT16IR080APRD

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.