Leader-Fastener® is a manufacturer and distributor of ASME B18.2.2 Hex Nut. We have a complete line of service from having invested in production plants, export department and to having a quality control team and center to meet your requirements. We regard quality as the life of the company. We persist in good quality as the first policy and have established a set of quality control and inspection system according to the international standard. We have carried out ISO9001 Quality Guarantee System in every course of production, transportation and selling. We do hope we could be your partner in business by topping quality, knight service and competitive price in the near future and be your friends as well.
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 |