External Metric Thread Table Chart Fastener Sizes M 0.25 - M 1.4

ISO Hardware Engineering Data
 Fastener and Screw / Bolt Design, Formula and Calculations

The following table chart are standard metric external thread sizes M 0.25 - M 1.4 per. ANSI/ASME B1.13M-1995. These thread sizes and classes represent bolts and screws, as well, as other standard external threads. Do not use these values for standard metric internal thread design. All units in mm.

Metric Internal and External threads

Where:
H = P ( 31/2 / 2 ) = 0.866025 P
or
0.125H = 0.108253P

ISO Metric
Thread Designation
Pitch
External Threads
Tolerance Class
Major Dia
Pitch Dia
Minor Dia
Max
Min
Max
Min
Max
Min
M0.25x0.075
0.075
6g
0.250
0.235
0.201
0.187
0.160
0.140
M0.25x0.075
0.075
4g6g
0.250
0.235
0.201
0.193
0.160
0.152
M0.3x0.08
0.08
6g
0.300
0.284
0.248
0.234
0.204
0.183
M0.3x0.08
0.08
4g6g
0.300
0.284
0.248
0.239
0.204
0.195
M0.3x0.09
0.09
6g
0.300
0.283
0.242
0.226
0.192
0.170
M0.3x0.09
0.09
4g6g
0.300
0.283
0.242
0.233
0.192
0.183
M0.35x0.09
0.09
6g
0.350
0.333
0.292
0.277
0.242
0.220
M0.35x0.09
0.09
4g6g
0.350
0.333
0.292
0.283
0.242
0.233
M0.4x0.1
0.1
6g
0.400
0.382
0.335
0.319
0.280
0.256
M0.4x0.1
0.1
4g6g
0.400
0.382
0.335
0.325
0.280
0.270
M0.45x0.1
0.1
6g
0.450
0.432
0.385
0.369
0.330
0.306
M0.45x0.1
0.1
4g6g
0.450
0.432
0.385
0.375
0.330
0.320
M0.5x0.125
0.125
6g
0.500
0.479
0.419
0.401
0.350
0.322
M0.5x0.125
0.125
4g6g
0.500
0.479
0.419
0.408
0.350
0.339
M0.55x0.125
0.125
6g
0.550
0.529
0.469
0.451
0.400
0.372
M0.55x0.125
0.125
4g6g
0.550
0.529
0.469
0.458
0.400
0.389
M0.6x0.15
0.15
6g
0.600
0.576
0.503
0.483
0.420
0.388
M0.6x0.15
0.15
4g6g
0.600
0.576
0.503
0.490
0.420
0.407
M0.7x0.175
0.175
6g
0.700
0.673
0.586
0.564
0.490
0.454
M0.7x0.175
0.175
4g6g
0.700
0.673
0.586
0.572
0.490
0.476
M0.8x0.2
0.2
6g
0.800
0.770
0.670
0.646
0.560
0.520
M0.8x0.2
0.2
4g6g
0.800
0.770
0.670
0.655
0.560
0.545
M0.9x0.225
0.225
6g
0.900
0.867
0.754
0.728
0.630
0.586
M0.9x0.225
0.225
4g6g
0.900
0.867
0.754
0.738
0.630
0.614
M1x0.25
0.25
6g
0.982
0.915
0.820
0.767
0.711
0.613
M1x0.25
0.25
4g6g
0.982
0.915
0.820
0.787
0.711
0.633
M1x0.2
0.2
6g
0.983
0.927
0.853
0.805
0.766
0.682
M1x0.2
0.2
4g6g
0.983
0.927
0.853
0.823
0.766
0.700
M1.1x0.25
0.25
6g
1.082
1.015
0.920
0.867
0.811
0.713
M1.1x0.25
0.25
4g6g
1.082
1.015
0.920
0.888
0.811
0.734
M1.1x0.2
0.2
6g
1.083
1.027
0.953
0.905
0.866
0.782
M1.1x0.2
0.2
4g6g
1.083
1.027
0.953
0.923
0.866
0.800
M1.2x0.25
0.25
6g
1.182
1.115
1.020
0.967
0.911
0.813
M1.2x0.25
0.25
4g6g
1.182
1.115
1.020
0.987
0.911
0.833
M1.2x0.2
0.2
6g
1.183
1.127
1.053
1.005
0.966
0.882
M1.2x0.2
0.2
4g6g
1.183
1.127
1.053
1.023
0.966
0.900
M1.4x0.3
0.3
6g
1.383
1.308
1.253
1.193
1.166
1.070
M1.4x0.3
0.3
4g6g
1.383
1.308
1.253
1.215
1.166
1.092
M1.4x0.2
0.2
6g
1.383
1.327
1.253
1.205
1.166
1.082
M1.4x0.2
0.2
4g6g
1.383
1.327
1.253
1.223
1.166
1.100

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