Number of Cutting Passes for Regular Type Inserts

TPI Pitch mm0.5 481.0 241.5 162.0 122.5 103.0 84.0 66.0 4
Number of Passes4-65-95-126-147-158-1710-2011-22

For mini-tools (06IR or 08IR) add 1-3 passes. Increase for hard materials.

Maximum Depth of First Cut for CNC Control

External Threading - M-Type Inserts

No. ofMax. Depth forFirst Pass (D1)mm
LowarbonHigh CarbonNonferrous
FullInsertPassesSteelSteelAlloySteelStainless SteelAluminium
ProfilePitchTPIDesignationMin.Max.Eq.(2)Dim.(3)Eq.(2)Dim.(3)Eq.(2)Dim.(3)Eq.(2)Dim.(3)Eq.(2)Dim.(3)
1.0016 ER/L 1.00 ISO590.340.510.310.460.270.410.220.330.480.71
1.2516 ER/L 1.25 ISO6110.420.630.380.570.340.500.270.410.590.88
ISO1.5016 ER/L 1.50 ISO6120.460.690.410.620.370.550.300.450.640.97
1.7516 ER/L 1.75 ISO8130.480.720.430.650.380.580.310.470.671.01
Metric2.0016 ER/L 2.00 ISO8140.500.750.450.680.400.600.330.490.701.05
2.5016 ER/L 2.50 ISO10150.530.800.480.720.420.640.340.520.741.12
3.0016 ER/L 3.00 ISO12170.560.840.500.760.450.670.360.550.781.18
2416 ER/L 24 UN590.340.510.310.460.270.410.220.330.480.71
2016 ER/L 20 UN6100.420.630.380.570.340.500.270.410.590.88
1816 ER/L 18 UN6110.460.690.410.620.370.550.300.450.640.97
American1616 ER/L 16 UN7120.470.710.420.640.380.570.310.460.660.99
UN1416 ER/L 14 UN6130.460.690.410.620.370.550.280.410.640.97
1216 ER/L 12 UN8140.500.750.450.680.400.600.330.490.701.05
816 ER/L 8 UN12170.560.840.500.760.450.670.360.550.781.18
1916 ER/L 19 W6110.350.520.320.470.280.420.210.310.490.73
British1616 ER/L 16 W7120.470.710.420.640.380.570.310.460.660.99
BSW1416 ER/L 14 W8130.500.750.450.680.400.600.330.490.701.05
1116 ER/L 11 W9140.440.660.400.590.350.530.290.430.620.92
1816 ER/L 18 NPT10200.240.360.220.320.190.290.160.230.340.50
NPT1416 ER/L 14 NPT13260.240.360.220.320.190.290.140.220.340.50
11.516 ER/L 11.5 NPT15240.270.400.240.360.220.320.180.260.380.56
816 ER/L 8 NPT17300.310.460.280.410.250.370.200.300.430.64
Round616 ER/L 6 Rnd9200.420.630.380.570.340.500.270.410.590.88
0.50-1.5048-1616 ER/L A60(1)0.220.330.200.300.180.260.140.210.310.46
Partial1.75-3.0014-816 ER/L G600.500.750.450.680.400.600.330.490.701.05
Profile 60º0.50-3.0048-816 ER/L AG600.240.360.220.320.190.290.160.230.340.50
3.50-5.007-522 ER/L N600.410.620.370.560.330.500.270.400.570.87
Partial1.75-3.0014-816 ER/L G550.500.750.450.680.400.600.330.490.701.05
Profile 55º0.50-3.0048-816 ER/L AG550.220.330.200.300.180.260.140.210.310.46

(1) Per the number of passes for the relevant pitch (2) Equal depth of cut method (3) Diminished depth of cut for each pass method