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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About Conduit
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About Nuts, Materials, and Finishes
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Locknuts for Metal Conduit Fittings

316 Stainless
Steel, and Aluminum


Secure threaded metal conduit fittings to a knockout in an outlet box or enclosure.
Zinc-plated steel, 316 stainless steel, and aluminum locknuts are compatible with NPSL and NPSM threads.
Locknuts with a PVC molded gasket create a seal for moisture protection.
Locknuts with serrated facing grip the material surface for more stability, compared to locknuts with smooth facing.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||
---|---|---|---|---|
NPSM Threads | ||||
1/2 | UL Listed, CSA Certified | 10 | 00000000 | 00000 |
3/4 | UL Listed, CSA Certified | 10 | 00000000 | 0000 |
1 | UL Listed, CSA Certified | 10 | 00000000 | 0000 |
1 1/2 | UL Listed, CSA Certified | 10 | 00000000 | 0000 |
1 1/4 | UL Listed, CSA Certified | 10 | 00000000 | 0000 |
2 | UL Listed, CSA Certified | 10 | 00000000 | 00000 |
Each | ||||
2 1/2 | CSA Certified | __ | 00000000 | 0000 |
3 | CSA Certified | __ | 00000000 | 0000 |
3 1/2 | CSA Certified | __ | 00000000 | 0000 |
4 | CSA Certified | __ | 00000000 | 0000 |
Pkg. | ||||
Zinc-Plated Steel with PVC Molded Gasket | ||||
NPSM Threads | ||||
1/2 | UL Listed, CSA Certified | 2 | 00000000 | 0000 |
3/4 | UL Listed, CSA Certified | 2 | 00000000 | 0000 |
1 | UL Listed, CSA Certified | 2 | 00000000 | 0000 |
1 1/2 | UL Listed, CSA Certified | 2 | 00000000 | 0000 |
1 1/4 | UL Listed, CSA Certified | 2 | 00000000 | 0000 |
2 | UL Listed, CSA Certified | 2 | 00000000 | 00000 |
Each | ||||
2 1/2 | CSA Certified | __ | 00000000 | 00000 |
3 | CSA Certified | __ | 00000000 | 00000 |
3 1/2 | CSA Certified | __ | 00000000 | 00000 |
4 | CSA Certified | __ | 00000000 | 00000 |
Zinc-Plated Steel with Serrated Facing | ||||
NPSM Threads | ||||
1/2 | UL Listed, CSA Certified | __ | 00000000 | 000 |
3/4 | UL Listed, CSA Certified | __ | 00000000 | 0000 |
1 | UL Listed, CSA Certified | __ | 00000000 | 0000 |
1 1/2 | UL Listed, CSA Certified | __ | 00000000 | 0000 |
1 1/4 | UL Listed, CSA Certified | __ | 00000000 | 0000 |
2 | UL Listed, CSA Certified | __ | 00000000 | 0000 |
2 1/2 | CSA Certified | __ | 00000000 | 00000 |
3 | CSA Certified | __ | 00000000 | 00000 |
4 | CSA Certified | __ | 00000000 | 00000 |
Steel Hex Panel Nuts

Fasten these panel nuts with a wrench for more torque while tightening than knurled panel nuts. Also known as dress nuts, they're extremely thin for use in tight spaces such as electrical panels.
Zinc-plated steel nuts resist corrosion in wet environments.
Black-oxide steel nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | |||||
---|---|---|---|---|---|
1/4"-32 | 5/16" | 5/64" | 10 | 000000000 | 000000 |
1/4"-32 | 3/8" | 3/32" | 10 | 000000000 | 0000 |
5/16"-32 | 7/16" | 7/64" | 10 | 000000000 | 00000 |
3/8"-32 | 5/8" | 3/32" | 1 | 000000000 | 0000 |
7/16"-28 | 5/8" | 3/32" | 1 | 000000000 | 0000 |
15/32"-32 | 9/16" | 5/64" | 1 | 000000000 | 0000 |
15/32"-32 | 5/8" | 3/32" | 1 | 000000000 | 0000 |
15/32"-32 | 5/8" | 9/16" | 1 | 000000000 | 0000 |
1/2"-28 | 5/8" | 3/32" | 1 | 000000000 | 0000 |
Black-Oxide Steel | |||||
3/8"-32 | 1/2" | 3/32" | 1 | 000000000 | 0000 |
7/16"-28 | 5/8" | 3/32" | 1 | 000000000 | 0000 |
1/2"-28 | 5/8" | 3/32" | 1 | 000000000 | 0000 |
1/2"-28 | 5/8" | 1/8" | 1 | 000000000 | 0000 |
1/2"-28 | 3/4" | 3/8" | 1 | 000000000 | 00000 |
5/8"-24 | 15/16" | 3/8" | 1 | 000000000 | 00000 |
11/16"-24 | 1" | 27/64" | 1 | 000000000 | 00000 |
3/4"-20 | 1" | 27/64" | 1 | 000000000 | 00000 |
7/8"-20 | 1 5/16" | 31/64" | 1 | 000000000 | 00000 |
Knurled Panel Nuts

These panel nuts are knurled to provide a secure grip for tightening and loosening by hand. Also known as dress nuts, they're extremely thin for use in tight spaces such as electrical panels. They're zinc plated to resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.