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We offer ASME B18.2.2 Hex Nut American specification fasteners including Hex Jam Nuts, Metric Flange Nuts, Metric Heavy Hex Nuts, Metric Slotted Hex Nuts, Acorn Nuts and Spring Nuts. For custom ASME B18.2.4.1M Metric Hex Nuts, we strictly follow the client’s specification and critical parameter. We satisfied our customer with our services and high-quality product.
Material : Carbon steel, Stainless steel, Alloy Steel, Brass.
Finishment: Black, Zinc Plated, Zinc Yellow, HDG, Phosphate, DACROMET, Geomet, Magin, Ruspert, Teflon, etc.

| Screw Thread | 0# | 1# | 2# | 3# | 4# | 5# | 6# | 8# | 10# | 12# | 1/4 | 5/16 | 3/8 | |
| d | 0.0600 | 0.0730 | 0.0860 | 0.0990 | 0.1120 | 0.1250 | 0.1380 | 0.1640 | 0.1900 | 0.2160 | 0.2500 | 0.3120 | 0.3750 | |
| PP | UNC | 80 | 64 | 56 | 48 | 40 | 40 | 32 | 32 | 24 | 24 | 20 | 18 | 16 |
| s | max | 0.156 | 0.156 | 0.188 | 0.188 | 0.25 | 0.312 | 0.312 | 0.344 | 0.375 | 0.438 | 0.438 | 0.562 | 0.625 |
| min | 0.15 | 0.15 | 0.18 | 0.18 | 0.241 | 0.302 | 0.302 | 0.332 | 0.362 | 0.423 | 0.423 | 0.545 | 0.607 | |
| k | max | 0.05 | 0.05 | 0.066 | 0.066 | 0.098 | 0.114 | 0.114 | 0.13 | 0.13 | 0.161 | 0.193 | 0.225 | 0.257 |
| min | 0.043 | 0.043 | 0.057 | 0.057 | 0.087 | 0.102 | 0.102 | 0.117 | 0.117 | 0.148 | 0.178 | 0.208 | 0.239 | |

| Screw Thread | 1-1/8 | 1-1/4 | 1-3/8 | 1-1/2 | |
| d | 1.1250 | 1.2500 | 1.3750 | 1.5000 | |
| PP | UNC | 7 | 7 | 6 | 6 |
| UNF | 12 | 12 | 12 | 12 | |
| 8-UN | 8 | 8 | 8 | 8 | |
| s | Nominal Size | 1-11/16 | 1-7/8 | 2-1/16 | 2-1/4 |
| min | 1.631 | 1.812 | 1.994 | 2.175 | |
| max | 1.688 | 1.875 | 2.062 | 2.250 | |
| e | min | 1.859 | 2.066 | 2.273 | 2.480 |
| max | 1.949 | 2.165 | 2.382 | 2.598 | |
| m | Nominal Size | 1 | 1-3/32 | 1-13/64 | 1-5/16 |
| min | 0.970 | 1.062 | 1.169 | 1.276 | |
| max | 1.030 | 1.126 | 1.237 | 1.348 | |
| m1 | Nominal Size | 5/8 | 3/4 | 13/16 | 7/8 |
| min | 0.595 | 0.718 | 0.778 | 0.839 | |
| max | 0.655 | 0.782 | 0.846 | 0.911 | |
①,Threads shall meet the requirements of ASME B.1
②,If electroplated finishes are required,reference ASTM F1941.Other finishes may be specified as indicated in the applicable mechanical and performance standards.

| Screw Thread | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 | 1-1/8 | 1-1/4 | 1-3/8 | |
| d | 0.2500 | 0.3125 | 0.3750 | 0.4375 | 0.5000 | 0.5625 | 0.6250 | 0.7500 | 0.8750 | 1.0000 | 1.1250 | 1.2500 | 1.3750 | |
| PP | UNC | 20 | 18 | 16 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 7 | 6 |
| UNF | 28 | 24 | 24 | 20 | 20 | 18 | 18 | 16 | 14 | 12 | 12 | 12 | 12 | |
| 8-UN | - | - | - | - | - | - | - | - | - | - | 8 | 8 | 8 | |
| s | min | 0.428 | 0.489 | 0.551 | 0.675 | 0.736 | 0.861 | 0.922 | 1.088 | 1.269 | 1.450 | 1.631 | 1.812 | 1.994 |
| max | 0.438 | 0.500 | 0.563 | 0.688 | 0.750 | 0.875 | 0.938 | 1.125 | 1.312 | 1.500 | 1.688 | 1.875 | 2.062 | |
| e | min | 0.488 | 0.557 | 0.628 | 0.768 | 0.840 | 0.982 | 1.051 | 1.240 | 1.447 | 1.653 | 1.859 | 2.066 | 2.273 |
| max | 0.505 | 0.577 | 0.650 | 0.794 | 0.866 | 1.010 | 1.083 | 1.299 | 1.516 | 1.732 | 1.949 | 2.165 | 2.382 | |
| m | min | 0.212 | 0.258 | 0.320 | 0.365 | 0.427 | 0.473 | 0.535 | 0.617 | 0.724 | 0.831 | 0.939 | 1.030 | 1.138 |
| max | 0.226 | 0.273 | 0.337 | 0.385 | 0.448 | 0.496 | 0.559 | 0.665 | 0.776 | 0.887 | 0.999 | 1.094 | 1.206 | |
| m1 | min | 0.150 | 0.180 | 0.210 | 0.240 | 0.302 | 0.301 | 0.363 | 0.398 | 0.458 | 0.519 | 0.579 | 0.687 | 0.747 |
| max | 0.163 | 0.195 | 0.227 | 0.260 | 0.323 | 0.324 | 0.387 | 0.446 | 0.510 | 0.575 | 0.639 | 0.751 | 0.815 | |
| Screw Thread | 1-1/2 | 1-5/8 | 1-3/4 | 1-7/8 | 2 | 2-1/4 | 2-1/2 | 2-3/4 | 3 | 3-1/4 | 3-1/2 | 3-3/4 | 4 | |
| d | 1.5000 | 1.6250 | 1.7500 | 1.8750 | 2.0000 | 2.2500 | 2.5000 | 2.7500 | 3.0000 | 3.2500 | 3.500 | 3.7500 | 4.0000 | |
| PP | UNC | 6 | - | 5 | - | 4-1/2 | 4-1/2 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| UNF | 12 | - | - | - | - | - | - | - | - | - | - | - | - | |
| 8-UN | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | |
| s | min | 2.175 | 2.350 | 2.538 | 2.722 | 2.900 | 3.263 | 3.625 | 3.988 | 4.350 | 4.713 | 5.075 | 5.438 | 5.800 |
| max | 2.250 | 2.430 | 2.625 | 2.813 | 3.000 | 3.375 | 3.750 | 4.125 | 4.500 | 4.875 | 5.250 | 5.625 | 6.000 | |
| e | min | 2.480 | 2.679 | 2.893 | 3.103 | 3.306 | 3.719 | 4.133 | 4.546 | 4.959 | 5.373 | 5.786 | 6.199 | 6.612 |
| max | 2.598 | 2.805 | 3.031 | 3.247 | 3.464 | 3.897 | 4.330 | 4.763 | 5.196 | 5.629 | 6.062 | 6.495 | 6.928 | |
| m | min | 1.245 | 1.364 | 1.460 | 1.567 | 1.675 | 1.890 | 2.105 | 2.319 | 2.534 | 2.749 | 2.964 | 3.178 | 3.393 |
| max | 1.317 | 1.416 | 1.540 | 1.651 | 1.763 | 1.986 | 2.209 | 2.431 | 2.654 | 2.877 | 3.011 | 3.322 | 3.545 | |
| m1 | min | 0.808 | 0.868 | 0.929 | 0.989 | 1.050 | 1.155 | 1.401 | 1.522 | 1.643 | 1.748 | 1.870 | 1.990 | 2.112 |
| max | 0.880 | 0.944 | 1.009 | 1.073 | 1.138 | 1.267 | 1.427 | 1.556 | 1.685 | 1.814 | 1.943 | 2.072 | 2.201 | |
①,Threads shall meet the requirements of ASME B.1
②,If electroplated finishes are required,reference ASTM F1941.Other finishes may be specified as indicated in the applicable mechanical and performance standards.

| Screw Thread | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 | 1-1/8 | 1-1/4 | 1-3/8 | 1-1/2 | |
| d | 0.250 | 0.3125 | 0.375 | 0.4375 | 0.500 | 0.5625 | 0.625 | 0.750 | 0.875 | 1.000 | 1.125 | 1.250 | 1.375 | 1.500 | |
| PP | UNC | 20 | 18 | 16 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 7 | 6 | 6 |
| UNF | 28 | 24 | 24 | 20 | 20 | 18 | 18 | 16 | 14 | 12 | 12 | 12 | 12 | 12 | |
| 8-UN | - | - | - | - | - | - | - | - | - | - | 8 | 8 | 8 | 8 | |
| s | Nominal Size | 7/16 | 1/2 | 9/16 | 11/16 | 3/4 | 7/8 | 15/16 | 1-1/8 | 1-5/16 | 1-1/2 | 1-11/16 | 1-7/8 | 2-1/16 | 2-1/4 |
| min | 0.428 | 0.489 | 0.551 | 0.675 | 0.736 | 0.861 | 0.922 | 1.088 | 1.269 | 1.450 | 1.631 | 1.812 | 1.994 | 2.175 | |
| max | 0.438 | 0.500 | 0.562 | 0.688 | 0.750 | 0.875 | 0.938 | 1.125 | 1.312 | 1.500 | 1.688 | 1.875 | 2.062 | 2.250 | |
| e | min | 0.488 | 0.557 | 0.628 | 0.768 | 0.840 | 0.892 | 1.051 | 1.240 | 1.447 | 1.653 | 1.859 | 2.066 | 2.273 | 2.480 |
| max | 0.505 | 0.577 | 0.650 | 0.794 | 0.866 | 1.010 | 1.083 | 1.299 | 1.516 | 1.732 | 1.949 | 2.165 | 2.382 | 2.598 | |
| m | Nominal Size | 9/32 | 21/64 | 13/32 | 29/64 | 9/16 | 39/64 | 23/32 | 13/16 | 29/32 | 1 | 1-5/32 | 1-1/4 | 1-3/8 | 1-1/2 |
| min | 0.274 | 0.320 | 0.398 | 0.444 | 0.552 | 0.598 | 0.706 | 0.798 | 0.890 | 0.982 | 1.136 | 1.228 | 1.351 | 1.474 | |
| max | 0.288 | 0.336 | 0.415 | 0.463 | 0.573 | 0.621 | 0.731 | 0.827 | 0.922 | 1.018 | 1.176 | 1.272 | 1.399 | 1.526 | |

| Screw Thread | 1-1/8 | 1-1/4 | 1-3/8 | 1-1/2 | 1-3/4 | 2 | 2-1/4 | 2-1/2 | 2-3/4 | 3 | 3-1/4 | 3-1/2 | 3-3/4 | 4 | |
| d | 1.1250 | 1.2500 | 1.3750 | 1.50000 | 1.7500 | 2.0000 | 2.2500 | 2.5000 | 2.7500 | 3.0000 | 3.2500 | 3.5000 | 3.7500 | 4.0000 | |
| PP | UNC | 7 | 7 | 6 | 6 | 5 | 4-1/2 | 4-1/2 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| UNF | 12 | 12 | 12 | 12 | - | - | - | - | - | - | - | - | - | - | |
| 8-UN | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | |
| s | Nominal Size | 1-13/16 | 2 | 2-3/16 | 2-3/8 | 2-3/4 | 3-1/8 | 3-1/2 | 3-7/8 | 4-1/4 | 4-5/8 | 5 | 5-3/8 | 5-3/4 | 6-1/8 |
| min | 1.756 | 1.938 | 2.119 | 2.300 | 2.662 | 3.025 | 3.388 | 3.750 | 4.112 | 4.475 | 4.838 | 5.200 | 5.562 | 5.925 | |
| max | 1.812 | 2.000 | 2.188 | 2.375 | 2.750 | 3.125 | 3.500 | 3.875 | 4.250 | 4.625 | 5 | 5.375 | 5.750 | 6.125 | |
| e | min | 2.002 | 2.209 | 2.416 | 2.622 | 3.035 | 3.449 | 3.862 | 4.275 | 4.688 | 5.102 | 5.515 | 5.928 | 6.341 | 6.755 |
| max | 2.093 | 2.309 | 2.526 | 2.742 | 3.175 | 3.608 | 4.041 | 4.474 | 4.907 | 5.340 | 5.774 | 6.207 | 6.640 | 7.073 | |
| m | Nominal Size | 1-1/8 | 1-1/4 | 1-3/8 | 1-1/2 | 1-3/4 | 2 | 2-1/4 | 2-1/2 | 2-3/4 | 3 | 3-1/4 | 3-1/2 | 3-3/4 | 4 |
| min | 1.079 | 1.187 | 1.310 | 1.433 | 1.679 | 1.925 | 2.155 | 2.401 | 2.647 | 2.893 | 3.124 | 3.370 | 3.616 | 3.862 | |
| max | 1.155 | 1.282 | 1.409 | 1.536 | 1.790 | 2.044 | 2.298 | 2.552 | 2.806 | 3.060 | 3.314 | 3.568 | 3.822 | 4.076 | |
| m1 | Nominal Size | 5/8 | 3/4 | 13/16 | 7/8 | 1 | 1-1/8 | 1-1/4 | 1-1/2 | 1-5/8 | 1-3/4 | 1-7/8 | 2 | 2-1/8 | 2-1/4 |
| min | 0.579 | 0.687 | 0.747 | 0.808 | 0.929 | 1.050 | 1.155 | 1.401 | 1.522 | 1.643 | 1.748 | 1.870 | 1.990 | 2.112 | |
| max | 0.655 | 0.782 | 0.846 | 0.911 | 1.040 | 1.169 | 1.298 | 1.552 | 1.681 | 1.810 | 1.939 | 2.068 | 2.197 | 2.326 | |

| Screw Thread | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 | 1-1/8 | 1-1/4 | 1-3/8 | |
| d | 0.2500 | 0.3125 | 0.3750 | 0.4375 | 0.5000 | 0.5625 | 0.6250 | 0.7500 | 0.8750 | 1.0000 | 1.1250 | 1.2500 | 1.3750 | |
| PP | UNC | 20 | 18 | 16 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 7 | 6 |
| UNF | 28 | 24 | 24 | 20 | 20 | 18 | 18 | 16 | 14 | 12 | 12 | 12 | 12 | |
| 8-UN | - | - | - | - | - | - | - | - | - | - | 8 | 8 | 8 | |
| s | Nominal Size | 1/2 | 9/16 | 11/16 | 3/4 | 7/8 | 15/16 | 1-1/16 | 1-1/4 | 1-7/16 | 1-5/8 | 1-13/16 | 2 | 2-3/16 |
| min | 0.488 | 0.546 | 0.669 | 0.728 | 0.850 | 0.909 | 1.031 | 1.212 | 1.394 | 1.575 | 1.756 | 1.938 | 2.119 | |
| max | 0.500 | 0.562 | 0.688 | 0.750 | 0.875 | 0.938 | 1.062 | 1.250 | 1.438 | 1.625 | 1.812 | 2.000 | 2.188 | |
| e | min | 0.556 | 0.622 | 0.763 | 0.830 | 0.969 | 1.037 | 1.175 | 1.382 | 1.589 | 1.796 | 2.002 | 2.209 | 2.416 |
| max | 0.577 | 0.650 | 0.794 | 0.866 | 1.010 | 1.083 | 1.227 | 1.443 | 1.660 | 1.876 | 2.093 | 2.309 | 2.526 | |
| m | Nominal Size | 15/64 | 19/64 | 23/64 | 27/64 | 31/64 | 35/64 | 39/64 | 47/64 | 55/64 | 63/64 | 1-7/64 | 1-7/32 | 1-11/32 |
| min | 0.218 | 0.280 | 0.341 | 0.403 | 0.464 | 0.526 | 0.587 | 0.710 | 0.833 | 0.956 | 1.079 | 1.187 | 1.310 | |
| max | 0.250 | 0.314 | 0.377 | 0.441 | 0.504 | 0.568 | 0.631 | 0.758 | 0.885 | 1.012 | 1.139 | 1.251 | 1.378 | |
| m1 | Nominal Size | 11/64 | 13/64 | 15/64 | 17/64 | 19/64 | 21/64 | 23/64 | 27/64 | 31/64 | 35/64 | 39/64 | 23/32 | 25/32 |
| min | 0.156 | 0.186 | 0.216 | 0.247 | 0.277 | 0.307 | 0.337 | 0.398 | 0.458 | 0.519 | 0.579 | 0.687 | 0.747 | |
| max | 0.188 | 0.220 | 0.252 | 0.285 | 0.317 | 0.349 | 0.381 | 0.446 | 0.510 | 0.575 | 0.639 | 0.751 | 0.815 | |
| Screw Thread | 1-1/2 | 1-5/8 | 1-3/4 | 1-7/8 | 2 | 2-1/4 | 2-1/2 | 2-3/4 | 3 | 3-1/4 | 3-1/2 | 3-3/4 | 4 | |
| d | 1.5000 | 1.6250 | 1.7500 | 1.8750 | 2 | 2.2500 | 2.5000 | 2.7500 | 3.0000 | 3.2500 | 3.5000 | 3.7500 | 4.0000 | |
| PP | UNC | 6 | - | 5 | - | 4-1/2 | 4-1/2 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| UNF | 12 | - | - | - | - | - | - | - | - | - | - | - | - | |
| 8-UN | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | |
| s | Nominal Size | 2-3/8 | 2-9/16 | 2-3/4 | 2-15/16 | 3-1/8 | 3-1/2 | 3-7/8 | 4-1/4 | 4-5/8 | 5 | 5/3-8 | 5-3/4 | 6-1/8 |
| min | 2.300 | 2.481 | 2.662 | 2.844 | 3.025 | 3.388 | 3.750 | 4.112 | 4.475 | 4.838 | 5.200 | 5.562 | 5.925 | |
| max | 2.375 | 2.562 | 2.750 | 2.938 | 3.125 | 3.500 | 3.875 | 4.250 | 4.625 | 5.000 | 5.375 | 5.750 | 6.125 | |
| e | min | 2.622 | 2.828 | 3.035 | 3.242 | 3.449 | 3.862 | 4.275 | 4.688 | 5.102 | 5.515 | 5.928 | 6.341 | 6.755 |
| max | 2.742 | 2.959 | 3.175 | 3.392 | 3.608 | 4.041 | 4.474 | 4.907 | 5.340 | 5.774 | 6.207 | 6.640 | 7.073 | |
| m | Nominal Size | 1-15/32 | 1-19/32 | 1-23/32 | 1-27/32 | 1-31/32 | 2-13/64 | 2-29/64 | 2-45/64 | 2-61/64 | 3-3/16 | 3-7/16 | 3-11/16 | 3-15/16 |
| min | 1.433 | 1.556 | 1.679 | 1.802 | 1.925 | 2.155 | 2.401 | 2.647 | 2.893 | 3.124 | 3.370 | 3.616 | 3.862 | |
| max | 1.505 | 1.632 | 1.759 | 1.886 | 2.013 | 2.251 | 2.505 | 2.759 | 3.013 | 3.252 | 3.506 | 3.760 | 4.014 | |
| m1 | Nominal Size | 27/32 | 29/32 | 31/32 | 1-1/32 | 1-3/32 | 1-13/64 | 1-29/64 | 1-37/64 | 1-45/64 | 1-13/16 | 1-15/16 | 2-1/16 | 2-3/16 |
| min | 0.808 | 0.868 | 0.929 | 0.989 | 1.050 | 1.155 | 1.401 | 1.522 | 1.643 | 1.748 | 1.870 | 1.990 | 2.112 | |
| max | 0.880 | 0.944 | 1.009 | 1.073 | 1.138 | 1.251 | 1.505 | 1.634 | 1.763 | 1.876 | 2.006 | 2.134 | 2.264 | |
| Registration Date | 2022/10/25(Year/Month/Date) |
|---|---|
| Buyer / Seller in EC21 | Seller |
| Business Type | Manufacturer |
| Year established | 2009 |
| Employees total | 101 - 500 |
| Annual revenue | USD 5,000,001 - 10,000,000 |
| Company | Zhejiang Leader Fastener Co.,Ltd. |
|---|---|
| Address | Wuyuan Street, Haiyan County, Jiaxing City, Zhejiang Province, ChinaJiaxingZhejiangChina |
| Phone | 86 - 573 - 86053286 |
| Homepage | http://www.leader-fasteners.com/ |
| Contact | Leader Fastener |