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ASME B18.2.2 Castle Nut
  • ASME B18.2.2 Castle NutASME B18.2.2 Castle Nut

ASME B18.2.2 Castle Nut

Leader-Fastener® is a manufacturer and distributor of ASME B18.2.2 Castle 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.

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Product Description

Leader-Fastener® ASME B18.2.2 Castle nut from Leader Fastener come with pre-drilled holes through which cotter pins can be inserted to hold the nuts securely in place. This gives the nuts the ability to withstand constant vibrations and allows them to stay in place during small movements. As these nuts are pre-drilled, they can be used without a pilot hole. These nuts are slotted, allowing it to be installed and removed using screwdrivers. It is available in stainless steel, carbon steel, and alloy steel to bear more wear and tear while also making it more corrosion resistant.


Product Specification of Leader-Fastener® ASME B18.2.2 Castle Nut

Material : Carbon steel, Stainless steel, Alloy Steel, Brass.

Finishment: Black, Zinc Plated, Zinc Yellow, HDG, Phosphate, DACROMET, Geomet, Magin, Ruspert, Teflon, etc.


Leader-Fastener® ASME B 18.2.2 - 2022 Heavy Hex Slotted Nuts [Table 12] (ASTM A563 / F594 / F467)


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
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
PP UNC 20 18 16 14 13 12 11 10 9 8 7 7
UNF 28 24 24 20 20 18 18 16 14 12 12 12
8-UN - - - - - - - - - - 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
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
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
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
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
k 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
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
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
w min 0.13 0.19 0.22 0.26 0.32 0.35 0.38 0.47 0.59 0.69 0.75 0.83
max 0.15 0.21 0.24 0.28 0.34 0.37 0.40 0.49 0.62 0.72 0.78 0.86
n ① min 0.07 0.09 0.12 0.12 0.15 0.15 0.18 0.18 0.18 0.24 0.24 0.31
max 0.10 0.12 0.15 0.15 0.18 0.18 0.24 0.24 0.24 0.30 0.33 0.40


Screw Thread 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 1.3750 1.5000 1.7500 2.0000 2.2500 2.5000 2.7500 3.0000 3.2500 3.5000 3.7500 4.0000
PP UNC 6 6 5 37988 37988 4 4 4 4 4 4 4
UNF 12 12 - - - - - - - - - -
8-UN 8 8 8 8 8 8 8 8 8 8 8 8
s Nominal Size 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 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 2.188 2.375 2.750 3.125 3.500 3.875 4.250 4.625 5.000 5.375 5.750 6.125
e min 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 2.526 2.742 3.175 3.608 4.041 4.474 4.907 5.340 5.774 6.207 6.640 7.073
k Nominal Size 1-11/32 1-15/32 1-23/32 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 1.310 1.433 1.679 1.925 2.155 2.401 2.647 2.893 3.124 3.370 3.616 3.862
max 1.378 1.505 1.759 2.013 2.251 2.505 2.759 3.013 3.252 3.506 3.760 4.014
w min 0.95 1.01 1.20 1.38 1.62 1.74 1.99 2.17 2.41 2.65 2.90 3.15
max 0.99 1.05 1.24 1.43 1.67 1.79 2.05 2.23 2.47 2.72 2.97 3.22
n ① min 0.31 0.37 0.43 0.43 0.43 0.55 0.55 0.62 0.62 0.62 0.62 0.62
max 0.40 0.46 0.52 0.52 0.52 0.64 0.64 0.71 0.71 0.71 0.71 0.71


ASME B 18.2.2 - 2022 Hex Slotted Nuts [Table6] (ASTM A563 / F594 / F467)

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 0.2500 0.3125 0.3750 0.4375 0.5000 0.5625 0.6250 0.7500 0.8750 1.0000 1.1250 1.2500 1.3750 1.5000
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 0.982 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 7/32 17/64 21/64 3/8 7/16 31/64 35/64 41/64 3/4 55/64 31/32 1-1/16 1-11/64 1-9/32
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 1.245
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 1.317
w min 0.12 0.16 0.19 0.21 0.27 0.29 0.32 0.38 0.49 0.56 0.61 0.67 0.78 0.82
max 0.14 0.18 0.21 0.23 0.29 0.31 0.34 0.40 0.52 0.59 0.64 0.70 0.82 0.86
n min 0.07 0.09 0.12 0.12 0.15 0.15 0.18 0.18 0.18 0.24 0.24 0.31 0.31 0.37
max 0.10 0.12 0.15 0.15 0.18 0.18 0.24 0.24 0.24 0.30 0.33 0.40 0.40 0.46


ASME B 18.2.2 - 2022 Hex Thick Slotted Nuts [Table8] (ASTM A563 / F594 / F467)


d 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 0.2500 0.3125 0.3750 0.4375 0.5000 0.5625 0.6250 0.7500 0.8750 1.0000 1.1250 1.2500 1.3750 1.5000
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 0.982 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
k 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
w min 0.18 0.22 0.27 0.29 0.40 0.41 0.49 0.55 0.64 0.70 0.80 0.86 0.98 1.04
max 0.20 0.24 0.29 0.31 0.42 0.43 0.51 0.57 0.67 0.73 0.83 0.89 1.02 1.08
n min 0.07 0.09 0.12 0.12 0.15 0.15 0.18 0.18 0.18 0.24 0.24 0.31 0.31 0.37
max 0.10 0.12 0.15 0.15 0.18 0.18 0.24 0.24 0.24 0.30 0.33 0.40 0.40 0.46



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