American National Standard ANSI/ASME B1.13M-1983 (R1995) describes a system of metric threads for general fastening purposes in mechanisms and structures. The standard is in basic agreement with ISO screw standards and resolutions, as of the date of publication, and features detailed information for diameter-pitch combinations selected as to preferred standard sizes. This Standard contains general metric standards for a 60-degree symmetrical screw thread with a basic ISO 68 designated profile.
M1 - M9 M10 - M18 M20 - M30 M32 - M42 M42 - M55 M56 - M64 M65 - M75 M76 - M90 M95 - M100
| Nominal Size ISO MF | Thread Form Type | Major Diameter mm d=D | Pitch mm p | Root Radius mm r | Pitch Diameter mm d2=D2 | Minor Diameter Male Thd. d3 | Minor Diameter Female Thd. D1 | Thread Height Male Thd. h3 | Thread Height Female Thd. H1 | Tap Drill Diameter mm |
|---|---|---|---|---|---|---|---|---|---|---|
| 1.0x0.2 | M | 1.00 | 0.20 | 0.029 | 0.870 | 0.755 | 0.783 | 0.123 | 0.108 | 0.80 |
| 1.1x0.2 | M | 1.10 | 0.20 | 0.029 | 0.970 | 0.855 | 0.883 | 0.123 | 0.108 | 0.90 |
| 1.2x0.2 | M | 1.20 | 0.20 | 0.029 | 1.070 | 0.955 | 0.983 | 0.123 | 0.108 | 1.00 |
| 1.4z0.2 | M | 1.40 | 0.20 | 0.029 | 1.270 | 1.155 | 1.183 | 0.123 | 0.108 | 1.20 |
| 1.6x0.2 | M | 1.60 | 0.20 | 0.029 | 1.470 | 1.355 | 1.383 | 0.123 | 0.108 | 1.40 |
| 1.8x0.2 | M | 1.80 | 0.20 | 0.029 | 1.670 | 1.555 | 1.583 | 0.123 | 0.108 | 1.60 |
| 2x0.25 | M | 2.00 | 0.25 | 0.036 | 1.838 | 1.693 | 1.729 | 0.153 | 0.135 | 1.75 |
| 2.2x0.25 | M | 2.20 | 0.25 | 0.036 | 2.038 | 1.893 | 1.929 | 0.153 | 0.135 | 1.95 |
| 2.5x0.35 | M | 2.50 | 0.35 | 0.051 | 2.273 | 2.071 | 2.121 | 0.215 | 0.189 | 2.10 |
| 3x0.35 | M | 3.00 | 0.35 | 0.051 | 2.773 | 2.571 | 2.621 | 0.215 | 0.189 | 2.60 |
| 3.5x0.35 | M | 3.50 | 0.35 | 0.051 | 3.273 | 3.071 | 3.121 | 0.215 | 0.189 | 3.10 |
| 4x0.5 | M | 4.00 | 0.50 | 0.072 | 3.675 | 3.387 | 3.459 | 0.307 | 0.271 | 3.50 |
| 4.5x0.5 | M | 4.50 | 0.50 | 0.072 | 4.175 | 3.887 | 3.959 | 0.307 | 0.271 | 4.00 |
| 5x0.5 | M | 5.00 | 0.50 | 0.072 | 4.675 | 4.387 | 4.459 | 0.307 | 0.271 | 4.50 |
| 5.5x0.5 | M | 5.50 | 0.50 | 0.072 | 5.175 | 4.887 | 4.959 | 0.307 | 0.271 | 5.00 |
| 6x0.75 | M | 6.00 | 0.75 | 0.108 | 5.513 | 5.080 | 5.188 | 0.460 | 0.406 | 5.20 |
| 7x0.75 | M | 7.00 | 0.75 | 0.108 | 6.513 | 6.080 | 6.188 | 0.460 | 0.406 | 6.20 |
| 8x0.75 | M | 8.00 | 0.75 | 0.108 | 7.513 | 7.080 | 7.188 | 0.460 | 0.406 | 7.20 |
| 8x1.0 | M | 8.00 | 1.00 | 0.144 | 7.350 | 6.773 | 6.917 | 0.613 | 0.541 | 7.00 |
| 9x0.75 | M | 9.00 | 0.75 | 0.108 | 8.513 | 8.080 | 8.188 | 0.460 | 0.406 | 8.20 |
| 9x 1 | M | 9.00 | 1.00 | 0.144 | 8.350 | 7.773 | 7.917 | 0.613 | 0.541 | 8.00 |
| 10x0.75 | M | 10.00 | 0.75 | 0.108 | 9.513 | 9.080 | 9.188 | 0.460 | 0.406 | 9.20 |
| 10x1 | M | 10.00 | 1.00 | 0.144 | 9.350 | 8.773 | 8.917 | 0.613 | 0.541 | 9.00 |
| 10x1.25 | M | 10.00 | 1.25 | 0.180 | 9.188 | 8.466 | 8.647 | 0.767 | 0.677 | 8.80 |
| 11x0.75 | M | 11.00 | 0.75 | 0.108 | 10.513 | 10.080 | 10.188 | 0.460 | 0.406 | 10.20 |
| 11x1 | M | 11.00 | 1.00 | 0.144 | 10.350 | 9.773 | 9.917 | 0.613 | 0.541 | 10.00 |
| 12x1 | M | 12.00 | 1.00 | 0.144 | 11.350 | 10.773 | 10.917 | 0.613 | 0.541 | 11.00 |
| 12x1.25 | M | 12.00 | 1.25 | 0.180 | 11.188 | 10.466 | 10.647 | 0.767 | 0.677 | 10.80 |
| 12x1.5 | M | 12.00 | 1.50 | 0.217 | 11.026 | 10.160 | 10.376 | 0.920 | 0.812 | 10.50 |
| 14x1.0 | M | 14.00 | 1.00 | 0.144 | 13.350 | 12.773 | 12.917 | 0.613 | 0.541 | 13.00 |
| 14x1.25 | M | 14.00 | 1.25 | 0.180 | 13.188 | 12.466 | 12.647 | 0.767 | 0.677 | 12.80 |
| 14x1.5 | M | 14.00 | 1.50 | 0.217 | 13.026 | 12.160 | 12.376 | 0.920 | 0.812 | 12.50 |
| 15x1 | M | 15.00 | 1.00 | 0.144 | 14.350 | 13.773 | 13.917 | 0.613 | 0.541 | 14.00 |
| 15x1.5 | M | 15.00 | 1.50 | 0.217 | 14.026 | 13.160 | 13.376 | 0.920 | 0.812 | 13.50 |
| 16x1 | M | 16.00 | 1.00 | 0.144 | 15.350 | 14.773 | 14.917 | 0.613 | 0.541 | 15.00 |
| 16x1.5 | M | 16.00 | 1.50 | 0.217 | 15.026 | 14.160 | 14.376 | 0.920 | 0.812 | 14.50 |
| 17x1.0 | M | 17.00 | 1.00 | 0.144 | 16.350 | 15.773 | 15.917 | 0.613 | 0.541 | 16.00 |
| 17x1.5 | M | 17.00 | 1.50 | 0.217 | 16.026 | 15.160 | 15.376 | 0.920 | 0.812 | 15.50 |
| 18x1.0 | M | 18.00 | 1.00 | 0.144 | 17.350 | 16.773 | 16.917 | 0.613 | 0.541 | 17.00 |
| 18x1.5 | M | 18.00 | 1.50 | 0.217 | 17.026 | 16.160 | 16.376 | 0.920 | 0.812 | 16.50 |
| 18x2.0 | M | 18.00 | 2.00 | 0.289 | 16.701 | 15.546 | 15.835 | 1.227 | 1.083 | 16.00 |
| 20x1.0 | M | 20.00 | 1.00 | 0.144 | 19.350 | 18.773 | 18.917 | 0.613 | 0.541 | 19.00 |
| 20x1.5 | M | 20.00 | 1.50 | 0.217 | 19.026 | 18.160 | 18.376 | 0.920 | 0.812 | 18.50 |
| 20x2.0 | M | 20.00 | 2.00 | 0.289 | 18.701 | 17.546 | 17.835 | 1.227 | 1.083 | 18.00 |
| 22x1.0 | M | 22.00 | 1.00 | 0.144 | 21.350 | 20.773 | 20.917 | 0.613 | 0.541 | 21.00 |
| 22x1.5 | M | 22.00 | 1.50 | 0.217 | 21.026 | 20.160 | 20.376 | 0.920 | 0.812 | 20.50 |
| 22x2.0 | M | 22.00 | 2.00 | 0.289 | 20.701 | 19.546 | 19.835 | 1.227 | 1.083 | 20.00 |
| 24x1.0 | M | 24.00 | 1.00 | 0.144 | 23.350 | 22.773 | 22.917 | 0.613 | 0.541 | 23.00 |
| 24x1.5 | M | 24.00 | 1.50 | 0.217 | 23.026 | 22.160 | 22.376 | 0.920 | 0.812 | 22.50 |
| 24x2.0 | M | 24.00 | 2.00 | 0.289 | 22.701 | 21.546 | 21.835 | 1.227 | 1.083 | 22.00 |
| 25x1.0 | M | 25.00 | 1.00 | 0.144 | 24.350 | 23.773 | 23.917 | 0.613 | 0.541 | 24.00 |
| 25x1.5 | M | 25.00 | 1.50 | 0.217 | 24.026 | 23.160 | 23.376 | 0.920 | 0.812 | 23.50 |
| 25x2.0 | M | 25.00 | 2.00 | 0.289 | 23.701 | 22.546 | 22.835 | 1.227 | 1.083 | 23.00 |
| 27x1.0 | M | 27.00 | 1.00 | 0.144 | 26.350 | 25.773 | 25.917 | 0.613 | 0.541 | 26.00 |
| 27x1.5 | M | 27.00 | 1.50 | 0.217 | 26.026 | 25.160 | 25.376 | 0.920 | 0.812 | 25.50 |
| 27x2.0 | M | 27.00 | 2.00 | 0.289 | 25.701 | 24.546 | 24.835 | 1.227 | 1.083 | 25.00 |
| 28x1.0 | M | 28.00 | 1.00 | 0.144 | 27.350 | 26.773 | 26.917 | 0.613 | 0.541 | 27.00 |
| 28x1.5 | M | 28.00 | 1.50 | 0.217 | 27.026 | 26.160 | 26.376 | 0.920 | 0.812 | 26.50 |
| 28x2.0 | M | 28.00 | 2.00 | 0.289 | 26.701 | 25.546 | 25.835 | 1.227 | 1.083 | 26.00 |
| 30x1.0 | M | 30.00 | 1.00 | 0.144 | 29.350 | 28.773 | 28.917 | 0.613 | 0.541 | 29.00 |
| 30x1.5 | M | 30.00 | 1.50 | 0.217 | 29.026 | 28.160 | 28.376 | 0.920 | 0.812 | 28.50 |
| 30x2.0 | M | 30.00 | 2.00 | 0.289 | 28.701 | 27.546 | 27.835 | 1.227 | 1.083 | 28.00 |
| 30x3.0 | M | 30.00 | 3.00 | 0.433 | 28.051 | 26.319 | 26.752 | 1.840 | 1.624 | 27.00 |
| 32x1.5 | M | 32.00 | 1.50 | 0.217 | 31.026 | 30.160 | 30.376 | 0.920 | 0.812 | 30.50 |
| 32x2.0 | M | 32.00 | 2.00 | 0.289 | 30.701 | 29.546 | 29.835 | 1.227 | 1.083 | 30.00 |
| 33x1.5 | M | 33.00 | 1.50 | 0.217 | 32.026 | 31.160 | 31.376 | 0.920 | 0.812 | 31.50 |
| 33x2.0 | M | 33.00 | 2.00 | 0.289 | 31.701 | 30.546 | 30.835 | 1.227 | 1.083 | 31.00 |
| 33x3.0 | M | 33.00 | 3.00 | 0.433 | 31.051 | 29.319 | 29.752 | 1.840 | 1.624 | 30.00 |
| 35x1.5 | M | 35.00 | 1.50 | 0.217 | 34.026 | 33.160 | 33.376 | 0.920 | 0.812 | 33.50 |
| 35x2.0 | M | 35.00 | 2.00 | 0.289 | 33.701 | 32.546 | 32.835 | 1.227 | 1.083 | 33.00 |
| 36x1.5 | M | 36.00 | 1.50 | 0.217 | 35.026 | 34.160 | 34.376 | 0.920 | 0.812 | 34.50 |
| 36x2.0 | M | 36.00 | 2.00 | 0.289 | 34.701 | 33.546 | 33.835 | 1.227 | 1.083 | 34.00 |
| 36x3.0 | M | 36.00 | 3.00 | 0.433 | 34.051 | 32.319 | 32.752 | 1.840 | 1.624 | 33.00 |
| 39x1.5 | M | 39.00 | 1.50 | 0.217 | 38.026 | 37.160 | 37.376 | 0.920 | 0.812 | 37.50 |
| 39x2.0 | M | 39.00 | 2.00 | 0.289 | 37.701 | 36.546 | 36.835 | 1.227 | 1.083 | 37.00 |
| 39x3.0 | M | 39.00 | 3.00 | 0.433 | 37.051 | 35.319 | 35.752 | 1.840 | 1.624 | 36.00 |
| 40x1.5 | M | 40.00 | 1.50 | 0.217 | 39.026 | 38.160 | 38.376 | 0.920 | 0.812 | 38.50 |
| 40x2.0 | M | 40.00 | 2.00 | 0.289 | 38.701 | 37.546 | 37.835 | 1.227 | 1.083 | 38.00 |
| 40x3.0 | M | 40.00 | 3.00 | 0.433 | 38.051 | 36.619 | 36.752 | 1.840 | 1.624 | 37.00 |
| 42x1.5 | M | 42.00 | 1.50 | 0.217 | 41.026 | 40.160 | 40.376 | 0.920 | 0.812 | 40.50 |
| 42x2.0 | M | 42.00 | 2.00 | 0.289 | 40.701 | 39.546 | 39.835 | 1.227 | 1.083 | 40.00 |
| 42x3.0 | M | 42.00 | 3.00 | 0.433 | 40.051 | 38.319 | 38.752 | 1.840 | 1.624 | 39.00 |
| 42x4.0 | M | 42.00 | 4.00 | 0.577 | 39.402 | 37.093 | 37.670 | 2.454 | 2.165 | 38.00 |
| 45x1.5 | M | 45.00 | 1.50 | 0.217 | 44.026 | 43.160 | 43.376 | 0.920 | 0.812 | 43.50 |
| 45x2.0 | M | 45.00 | 2.00 | 0.289 | 43.701 | 42.546 | 42.835 | 1.227 | 1.083 | 43.00 |
| 45x3.0 | M | 45.00 | 3.00 | 0.433 | 43.051 | 41.319 | 41.752 | 1.840 | 1.624 | 42.00 |
| 45x4.0 | M | 45.00 | 4.00 | 0.577 | 42.402 | 40.093 | 40.670 | 2.454 | 2.165 | 41.00 |
| 48x1.5 | M | 48.00 | 1.50 | 0.217 | 47.026 | 46.160 | 46.376 | 0.920 | 0.812 | 46.50 |
| 48x2.0 | M | 48.00 | 2.00 | 0.289 | 46.701 | 45.546 | 45.835 | 1.227 | 1.083 | 46.00 |
| 48x3.0 | M | 48.00 | 3.00 | 0.433 | 46.051 | 44.319 | 44.752 | 1.840 | 1.624 | 45.00 |
| 48x4.0 | M | 48.00 | 4.00 | 0.577 | 45.402 | 43.093 | 43.670 | 2.454 | 2.165 | 44.00 |
| 50x1.5 | M | 50.00 | 1.50 | 0.217 | 49.026 | 48.160 | 48.376 | 0.920 | 0.812 | 48.50 |
| 50x2.0 | M | 50.00 | 2.00 | 0.289 | 48.701 | 47.546 | 47.835 | 1.227 | 1.083 | 48.00 |
| 50x3.0 | M | 50.00 | 3.00 | 0.433 | 48.051 | 46.319 | 46.752 | 1.840 | 1.624 | 47.00 |
| 52x1.5 | M | 52.00 | 1.50 | 0.217 | 51.026 | 50.160 | 50.376 | 0.920 | 0.812 | 50.50 |
| 52x2.0 | M | 52.00 | 2.00 | 0.289 | 50.701 | 49.546 | 49.835 | 1.227 | 1.083 | 50.00 |
| 52x3.0 | M | 52.00 | 3.00 | 0.433 | 50.051 | 48.319 | 48.752 | 1.840 | 1.624 | 49.00 |
| 52x4.0 | M | 52.00 | 4.00 | 0.577 | 49.402 | 47.093 | 47.670 | 2.454 | 2.165 | 48.00 |
| 55x1.5 | M | 55.00 | 1.50 | 0.217 | 54.026 | 53.160 | 53.376 | 0.920 | 0.812 | 53.50 |
| 55x2.0 | M | 55.00 | 2.00 | 0.289 | 53.701 | 52.546 | 52.835 | 1.227 | 1.083 | 53.00 |
| 55x3.0 | M | 55.00 | 3.00 | 0.433 | 53.051 | 51.319 | 51.752 | 1.840 | 1.624 | 52.00 |
| 55x4.0 | M | 55.00 | 4.00 | 0.577 | 52.402 | 50.093 | 50.670 | 2.454 | 2.165 | 51.00 |
| 56x1.5 | M | 56.00 | 1.50 | 0.217 | 55.026 | 54.160 | 54.376 | 0.920 | 0.812 | 54.50 |
| 56x2.0 | M | 56.00 | 2.00 | 0.289 | 54.701 | 53.546 | 53.835 | 1.227 | 1.083 | 54.00 |
| 56x3.0 | M | 56.00 | 3.00 | 0.433 | 54.051 | 52.319 | 52.752 | 1.840 | 1.624 | 53.00 |
| 56x4.0 | M | 56.00 | 4.00 | 0.577 | 53.402 | 51.903 | 51.670 | 2.454 | 2.165 | 52.00 |
| 58x1.5 | M | 58.00 | 1.50 | 0.217 | 57.026 | 56.160 | 56.376 | 0.920 | 0.812 | 56.50 |
| 58x2.0 | M | 58.00 | 2.00 | 0.289 | 56.701 | 55.546 | 55.835 | 1.227 | 1.083 | 56.00 |
| 58x3.0 | M | 58.00 | 3.00 | 0.433 | 56.051 | 54.319 | 54.752 | 1.840 | 1.624 | 55.00 |
| 58x4.0 | M | 58.00 | 4.00 | 0.577 | 55.402 | 53.093 | 53.670 | 2.454 | 2.165 | 54.00 |
| 60x1.5 | M | 60.00 | 1.50 | 0.217 | 59.026 | 58.160 | 58.376 | 0.920 | 0.812 | 58.50 |
| 60x2.0 | M | 60.00 | 2.00 | 0.289 | 58.701 | 57.546 | 57.835 | 1.227 | 1.083 | 58.00 |
| 60x3.0 | M | 60.00 | 3.00 | 0.433 | 58.051 | 56.319 | 56.752 | 1.840 | 1.624 | 57.00 |
| 60x4.0 | M | 60.00 | 4.00 | 0.577 | 57.402 | 55.093 | 55.670 | 2.454 | 2.165 | 56.00 |
| 62x1.5 | M | 62.00 | 1.50 | 0.217 | 61.026 | 60.160 | 60.376 | 0.920 | 0.812 | 60.50 |
| 62x2.0 | M | 62.00 | 2.00 | 0.289 | 60.701 | 59.546 | 59.835 | 1.227 | 1.083 | 60.00 |
| 62x3.0 | M | 62.00 | 3.00 | 0.433 | 60.051 | 58.319 | 58.752 | 1.840 | 1.624 | 59.00 |
| 62x4.0 | M | 62.00 | 4.00 | 0.577 | 59.402 | 57.093 | 57.670 | 2.454 | 2.165 | 58.00 |
| 64x1.5 | M | 64.00 | 1.50 | 0.217 | 63.026 | 62.160 | 62.376 | 0.920 | 0.812 | 62.50 |
| 64x2.0 | M | 64.00 | 2.00 | 0.289 | 62.701 | 61.546 | 61.835 | 1.227 | 1.083 | 62.00 |
| 64x3.0 | M | 64.00 | 3.00 | 0.433 | 62.051 | 60.319 | 60.752 | 1.840 | 1.624 | 61.00 |
| 64x4.0 | M | 64.00 | 4.00 | 0.577 | 61.402 | 59.093 | 59.670 | 2.454 | 2.165 | 60.00 |
| 65x1.5 | M | 65.00 | 1.50 | 0.217 | 64.026 | 63.160 | 63.376 | 0.920 | 0.812 | 63.50 |
| 65x2.0 | M | 65.00 | 2.00 | 0.289 | 63.789 | 62.546 | 62.835 | 1.227 | 1.083 | 63.00 |
| 65x3.0 | M | 65.00 | 3.00 | 0.433 | 63.051 | 61.319 | 61.752 | 1.840 | 1.624 | 62.00 |
| 65x4.0 | M | 65.00 | 4.00 | 0.577 | 62.402 | 60.093 | 60.670 | 2.454 | 2.165 | 61.00 |
| 68x1.5 | M | 68.00 | 1.50 | 0.217 | 67.026 | 66.160 | 66.376 | 0.920 | 0.812 | 66.50 |
| 68x2.0 | M | 68.00 | 2.00 | 0.289 | 66.701 | 65.546 | 65.835 | 1.227 | 1.083 | 66.00 |
| 68x3.0 | M | 68.00 | 3.00 | 0.433 | 66.051 | 64.319 | 64.752 | 1.840 | 1.624 | 65.00 |
| 68x4.0 | M | 68.00 | 4.00 | 0.577 | 65.402 | 63.093 | 63.670 | 2.454 | 2.165 | 64.00 |
| 70x1.5 | M | 70.00 | 1.50 | 0.217 | 69.026 | 68.160 | 68.376 | 0.920 | 0.812 | 68.50 |
| 70x2.0 | M | 70.00 | 2.00 | 0.289 | 68.201 | 67.546 | 67.835 | 1.227 | 1.083 | 68.00 |
| 70x3.0 | M | 70.00 | 3.00 | 0.433 | 68.051 | 66.319 | 66.752 | 1.840 | 1.624 | 67.00 |
| 70x4.0 | M | 70.00 | 4.00 | 0.577 | 67.402 | 65.093 | 65.670 | 2.454 | 2.165 | 66.00 |
| 70x6.0 | M | 70.00 | 6.00 | 0.866 | 66.103 | 62.639 | 63.505 | 3.681 | 3.248 | 64.00 |
| 72x1.5 | M | 72.00 | 1.50 | 0.217 | 71.026 | 70.160 | 70.376 | 0.920 | 0.812 | 70.50 |
| 72x2.0 | M | 72.00 | 2.00 | 0.289 | 70.701 | 69.546 | 69.835 | 1.227 | 1.083 | 70.00 |
| 72x3.0 | M | 72.00 | 3.00 | 0.433 | 70.051 | 68.319 | 68.752 | 1.840 | 1.624 | 69.00 |
| 72x4.0 | M | 72.00 | 4.00 | 0.577 | 69.402 | 67.093 | 67.670 | 2.454 | 2.165 | 68.00 |
| 72x6.0 | M | 72.00 | 6.00 | 0.866 | 68.103 | 64.639 | 65.505 | 3.681 | 3.248 | 66.00 |
| 75x1.5 | M | 75.00 | 1.50 | 0.217 | 74.026 | 73.160 | 73.376 | 0.920 | 0.812 | 73.50 |
| 75x2.0 | M | 75.00 | 2.00 | 0.289 | 73.701 | 72.546 | 72.835 | 1.227 | 1.083 | 73.00 |
| 75x3.0 | M | 75.00 | 3.00 | 0.433 | 73.051 | 71.319 | 71.752 | 1.840 | 1.624 | 72.00 |
| 75x4.0 | M | 75.00 | 4.00 | 0.577 | 72.402 | 70.093 | 70.670 | 2.454 | 2.165 | 71.00 |
| 75x6.0 | M | 75.00 | 6.00 | 0.866 | 71.103 | 67.639 | 68.505 | 3.681 | 3.248 | 69.00 |
| 76x1.5 | M | 76.00 | 1.50 | 0.217 | 75.026 | 74.160 | 74.376 | 0.920 | 0.812 | 74.50 |
| 76x2.0 | M | 76.00 | 2.00 | 0.289 | 74.701 | 73.546 | 73.835 | 1.227 | 1.083 | 74.00 |
| 76x3.0 | M | 76.00 | 3.00 | 0.433 | 74.051 | 72.319 | 72.752 | 1.840 | 1.624 | 73.00 |
| 76x4.0 | M | 76.00 | 4.00 | 0.577 | 73.402 | 71.093 | 71.670 | 2.454 | 2.165 | 72.00 |
| 76x6.0 | M | 76.00 | 6.00 | 0.866 | 72.103 | 68.639 | 69.505 | 3.681 | 3.248 | 70.00 |
| 80x1.5 | M | 80.00 | 1.50 | 0.217 | 79.026 | 78.160 | 78.376 | 0.920 | 0.812 | 78.50 |
| 80x2.0 | M | 80.00 | 2.00 | 0.289 | 78.701 | 77.546 | 77.835 | 1.227 | 1.083 | 78.00 |
| 80x3.0 | M | 80.00 | 3.00 | 0.433 | 78.051 | 76.319 | 76.752 | 1.840 | 1.624 | 77.00 |
| 80x4.0 | M | 80.00 | 4.00 | 0.577 | 77.402 | 75.093 | 75.670 | 2.454 | 2.165 | 76.00 |
| 80x6.0 | M | 80.00 | 6.00 | 0.866 | 76.103 | 72.639 | 73.505 | 3.681 | 3.248 | 74.00 |
| 85x2.0 | M | 85.00 | 2.00 | 0.289 | 83.701 | 82.546 | 82.535 | 1.227 | 1.083 | 83.00 |
| 85x3.0 | M | 85.00 | 3.00 | 0.433 | 83.051 | 81.319 | 81.752 | 1.840 | 1.624 | 82.00 |
| 85x4.0 | M | 85.00 | 4.00 | 0.577 | 82.402 | 80.093 | 80.670 | 2.454 | 2.165 | 81.00 |
| 85x6.0 | M | 85.00 | 6.00 | 0.866 | 81.103 | 77.639 | 78.505 | 3.681 | 3.248 | 79.00 |
| 90x2.0 | M | 90.00 | 2.00 | 0.289 | 88.701 | 87.546 | 87.835 | 1.227 | 1.083 | 88.00 |
| 90x3.0 | M | 90.00 | 3.00 | 0.433 | 88.051 | 86.319 | 86.752 | 1.840 | 1.624 | 87.00 |
| 90x4.0 | M | 90.00 | 4.00 | 0.577 | 87.402 | 85.093 | 85.670 | 2.454 | 2.165 | 86.00 |
| 90x6.0 | M | 90.00 | 6.00 | 0.866 | 86.103 | 82.639 | 83.505 | 3.681 | 0.328 | 84.00 |
| 95x2.0 | M | 95.00 | 2.00 | 0.289 | 93.701 | 92.546 | 92.835 | 1.227 | 1.083 | 93.00 |
| 95x3.0 | M | 95.00 | 3.00 | 0.433 | 93.051 | 91.319 | 91.752 | 1.840 | 1.624 | 92.00 |
| 95x4.0 | M | 95.00 | 4.00 | 0.577 | 92.402 | 90.093 | 90.670 | 2.454 | 2.165 | 91.00 |
| 95x6.0 | M | 95.00 | 6.00 | 0.866 | 91.103 | 87.639 | 88.505 | 3.681 | 3.248 | 89.00 |
| 100x2.0 | M | 100.00 | 2.00 | 0.289 | 98.701 | 97.546 | 97.835 | 1.227 | 1.083 | 98.00 |
| 100x3.0 | M | 100.00 | 3.00 | 0.433 | 98.051 | 96.319 | 96.752 | 1.840 | 1.624 | 97.00 |
| 100x4.0 | M | 100.00 | 4.00 | 0.577 | 97.402 | 95.093 | 95.670 | 2.454 | 2.165 | 96.00 |
| 100x6.0 | M | 100.00 | 6.00 | 0.866 | 96.103 | 92.639 | 93.505 | 3.681 | 3.248 | 94.00 |
The metric M profile threads of tolerance class 6H/6g are intended for metric applications where the inch class 2A/2B have been used. At the minimum material limits, the 6H/6g results in a looser fit than the 2A/2B. Tabular data are also provided for a tighter tolerance fit external thread of class 4g6g which is approximately quivalent to the inch class 3A but with an allowance applied. It may be noted that a 4H5H/4h6h fit is approximately equivalent to class 3A/3B fit in the inch system.
Threads produced to this Standard ANSI/ASME B1.13M are fully interchangeable with threads conforming to other National Standards that are based on ISO 68 basic profile and ISO 965/1 tolerance practices. Threads produced to this Standard should be mechanically interchangeable with those produced to ANSI B1.18M-1982 (R1987) “Metric Screw Threads for Commercial Mechanical Fasteners-Boundary Profile Defined,” of the same size and tolerance class. However, there is a possibility that some parts may be accepted by conventional gages used for threads made to ANSI/ASME B1.13M and rejected by the Double-NOT-GO gages required for threads made to ANSI B1.18M. Threads produced in accordance with M profile and MJ profile ANSI/ASME B1.21M design data will assemble with each other. However, external MJ threads will encounter interference on the root radii with internal M thread crests when both threads are at maximum material condition