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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About Conduit
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About Nuts, Materials, and Finishes
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Locknuts for Metal Conduit Fittings

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.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel with PVC Molded Gasket | ||||
---|---|---|---|---|
NPSM Threads | ||||
1/2 | UL Listed, CSA Certified | 2 | 00000000 | 00000 |
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 |
Stainless Steel Sealing Nuts

These nuts have good chemical resistance and may be mildly magnetic. They have a molded silicone seal that prevents leaks and seals out contaminants. They meet UL 50 for use on enclosures.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Max. Pressure | Seal Temp. Range, °F | Specifications Met | Each | |
18-8 Stainless Steel | |||||||
---|---|---|---|---|---|---|---|
6-32 | 5/16" | 9/64" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 00000 |
8-32 | 3/8" | 5/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
10-24 | 3/8" | 5/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
10-32 | 3/8" | 5/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
1/4"-20 | 7/16" | 7/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
1/4"-28 | 7/16" | 7/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
5/16"-18 | 1/2" | 17/64" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
5/16"-24 | 1/2" | 17/64" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
3/8"-16 | 9/16" | 21/64" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
3/8"-24 | 9/16" | 21/64" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
7/16"-20 | 11/16" | 3/8" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
1/2"-13 | 3/4" | 27/64" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
1/2"-20 | 3/4" | 27/64" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
5/8"-18 | 15/16" | 35/64" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
Brass Sealing Nuts

These nickel-plated brass sealing nuts have good resistance to chemicals and salt water. A nickel plating provides additional corrosion resistance and a decorative metallic finish. They have a silicone seal that prevents leaks and seals out contaminants. All meet UL 50 for use on enclosures. Nuts are nonmagnetic.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Max. Pressure | Seal Temp. Range, °F | Specifications Met | Each | |
Nickel-Plated Brass | |||||||
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6-32 | 1/2" | 7/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 00000 |
8-32 | 1/2" | 7/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
10-24 | 1/2" | 7/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
10-32 | 1/2" | 7/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
1/4"-20 | 5/8" | 7/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
1/4"-28 | 5/8" | 7/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
3/8"-16 | 5/8" | 7/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
3/8"-24 | 5/8" | 7/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |
1/2"-20 | 3/4" | 7/32" | 6,000 psi | -100° to 400° | UL 50 | 000000000 | 0000 |