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Locknuts for Metal Conduit Fittings

Zinc-Plated
Steel, 316 Stainless
Steel, and Aluminum
Steel, 316 Stainless
Steel, and Aluminum

Zinc-Plated Steel with PVC Molded Gasket

Zinc-Plated
Steel with
Serrated Facing
Steel with
Serrated Facing

304 Stainless Steel

Brass
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.
Pipe Size | Thread 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 | 00000 |
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 | 0000 |
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 |
304 Stainless Steel | |||||
PG Threads | |||||
__ | PG-7 | __ | __ | 00000000 | 0000 |
__ | PG-9 | __ | __ | 00000000 | 00000 |
__ | PG-11 | __ | __ | 00000000 | 0000 |
__ | PG-13.5 | __ | __ | 00000000 | 0000 |
__ | PG-16 | __ | __ | 00000000 | 0000 |
__ | PG-21 | __ | __ | 00000000 | 00000 |
__ | PG-29 | __ | __ | 00000000 | 00000 |
__ | PG-36 | __ | __ | 00000000 | 00000 |
Metric Threads | |||||
__ | M8 | __ | __ | 00000000 | 0000 |
__ | M12 | __ | __ | 00000000 | 0000 |
__ | M16 | __ | __ | 00000000 | 00000 |
__ | M20 | __ | __ | 00000000 | 00000 |
__ | M25 | __ | __ | 00000000 | 00000 |
__ | M32 | __ | __ | 00000000 | 00000 |
__ | M40 | __ | __ | 00000000 | 00000 |
__ | M50 | __ | __ | 00000000 | 00000 |
__ | M63 | __ | __ | 00000000 | 00000 |
316 Stainless Steel | |||||
NPSL | |||||
1/2 | __ | UL Listed, C-UL Listed | __ | 00000000 | 00000 |
3/4 | __ | UL Listed, C-UL Listed | __ | 00000000 | 00000 |
1 | __ | UL Listed, C-UL Listed | __ | 00000000 | 00000 |
1 1/2 | __ | UL Listed, C-UL Listed | __ | 00000000 | 00000 |
1 1/4 | __ | UL Listed, C-UL Listed | __ | 00000000 | 00000 |
2 | __ | UL Listed, C-UL Listed | __ | 00000000 | 00000 |
3 | __ | UL Listed, C-UL Listed | __ | 00000000 | 00000 |
4 | __ | UL Listed, C-UL Listed | __ | 00000000 | 00000 |
Aluminum | |||||
NPSM Threads | |||||
1/2 | __ | __ | __ | 00000000 | 0000 |
3/4 | __ | __ | __ | 00000000 | 0000 |
1 | __ | __ | __ | 00000000 | 0000 |
1 1/2 | __ | __ | __ | 00000000 | 0000 |
1 1/4 | __ | __ | __ | 00000000 | 0000 |
2 | __ | __ | __ | 00000000 | 00000 |
Brass | |||||
Metric Threads | |||||
__ | M12 | DIN EN 60204 | __ | 0000000 | 0000 |
__ | M16 | DIN EN 60204 | __ | 0000000 | 0000 |
__ | M20 | DIN EN 60204 | __ | 0000000 | 0000 |
__ | M25 | DIN EN 60204 | __ | 00000000 | 0000 |
__ | M32 | DIN EN 60204 | __ | 0000000 | 0000 |
__ | M40 | DIN EN 60204 | __ | 0000000 | 00000 |
__ | M50 | DIN EN 60204 | __ | 0000000 | 00000 |
__ | M63 | DIN EN 60204 | __ | 00000000 | 00000 |
Locknuts for Plastic Conduit Fittings

Nylon

PVC
Secure threaded plastic conduit fittings to a knockout in an outlet box or enclosure. PVC locknuts are compatible with PVC Schedule 40 and Schedule 80 conduit with NPT and NPSM threads.
Black | Gray | |||||
---|---|---|---|---|---|---|
Thread Size | Pipe Size | Specifications Met | Each | Each | ||
Nylon | ||||||
NPT Threads | ||||||
__ | 1/4 | __ | 00000000 | 00000 | 00000000 | 00000 |
__ | 3/8 | __ | 00000000 | 000 | 00000000 | 000 |
__ | 1/2 | __ | 00000000 | 000 | 00000000 | 0000 |
__ | 3/4 | __ | 00000000 | 0000 | 00000000 | 0000 |
__ | 1 | __ | 00000000 | 0000 | 00000000 | 0000 |
__ | 1 1/4 | __ | 00000000 | 0000 | 00000000 | 0000 |
__ | 1 1/2 | __ | 00000000 | 0000 | 00000000 | 0000 |
__ | 2 | __ | 00000000 | 00000 | 00000000 | 00000 |
PG Threads | ||||||
PG-11 | __ | __ | 0000000 | 0000 | 00000000 | 0000 |
PG-13.5 | __ | __ | 0000000 | 0000 | 0000000 | 0000 |
PG-16 | __ | __ | 0000000 | 0000 | 00000000 | 0000 |
PG-21 | __ | __ | 0000000 | 0000 | 00000000 | 0000 |
PG-29 | __ | __ | 0000000 | 0000 | 00000000 | 0000 |
PG-36 | __ | __ | 0000000 | 00000 | 00000000 | 00000 |
PG-48 | __ | __ | 00000000 | 00000 | 000000 | 00 |
PG-7 | __ | __ | 0000000 | 000 | 00000000 | 000 |
PG-9 | __ | __ | 00000000 | 0000 | 00000000 | 0000 |
Metric Threads | ||||||
M12 | __ | __ | 00000000 | 0000 | 00000000 | 0000 |
M16 | __ | __ | 00000000 | 0000 | 00000000 | 0000 |
M20 | __ | __ | 0000000 | 0000 | 00000000 | 0000 |
M25 | __ | __ | 00000000 | 0000 | 00000000 | 0000 |
M32 | __ | __ | 00000000 | 0000 | 00000000 | 0000 |
M40 | __ | __ | 00000000 | 0000 | 00000000 | 0000 |
M50 | __ | __ | 00000000 | 00000 | 000000 | 00 |
M63 | __ | __ | 00000000 | 00000 | 00000000 | 00000 |
PVC | ||||||
NPSM Threads | ||||||
__ | 1/2 | UL Recognized Component | 000000 | 00 | 0000000 | 000 |
__ | 3/4 | UL Recognized Component | 000000 | 00 | 0000000 | 0000 |
__ | 1 | UL Recognized Component | 000000 | 00 | 0000000 | 0000 |