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Conduit and Cord Grip Thread Adapters
NPT × Metric
NPT × PG
Metric × PG
PG × NPT
PG × Metric
Adapt metric, NPT, and PG conduit and cord grip threads to match knockout threads. A rubber O-ring seals out moisture.
Nylon adapters are lightweight and chemical resistant.
For technical drawings and 3-D models, click on a part number.
Conduit and Cord Grip Connection | Electrical Box Connection | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size  | Pipe Size | Thread Type | Gender | Thread Size | Pipe Size | Thread Type | Gender | Each | |
Nickel-Plated Brass | |||||||||
NPT × Metric | |||||||||
| __ | 1/2 | NPT | Female | M16 | __ | Metric | Male | 000000 | 000000 |
| __ | 1/2 | NPT | Female | M20 | __ | Metric | Male | 000000 | 00000 |
| __ | 1/2 | NPT | Female | M25 | __ | Metric | Male | 000000 | 00000 |
| __ | 3/4 | NPT | Female | M25 | __ | Metric | Male | 000000 | 00000 |
| __ | 1 | NPT | Female | M32 | __ | Metric | Male | 000000 | 00000 |
| __ | 1 1/4 | NPT | Female | M32 | __ | Metric | Male | 000000 | 00000 |
NPT × PG | |||||||||
| __ | 1/2 | NPT | Female | PG-9 | __ | PG | Male | 0000000 | 00000 |
| __ | 1/2 | NPT | Female | PG-11 | __ | PG | Male | 0000000 | 00000 |
| __ | 1/2 | NPT | Female | PG-13.5 | __ | PG | Male | 0000000 | 00000 |
| __ | 1/2 | NPT | Female | PG-16 | __ | PG | Male | 0000000 | 00000 |
| __ | 1/2 | NPT | Female | PG-21 | __ | PG | Male | 0000000 | 00000 |
| __ | 3/4 | NPT | Female | PG-21 | __ | PG | Male | 0000000 | 00000 |
| __ | 1 | NPT | Female | PG-29 | __ | PG | Male | 0000000 | 00000 |
Metric × PG | |||||||||
| M16 | __ | Metric | Female | PG-9 | __ | PG | Male | 0000000 | 0000 |
| M20 | __ | Metric | Female | PG-11 | __ | PG | Male | 0000000 | 0000 |
| M20 | __ | Metric | Female | PG-13.5 | __ | PG | Male | 0000000 | 0000 |
| M25 | __ | Metric | Female | PG-16 | __ | PG | Male | 0000000 | 00000 |
PG × NPT | |||||||||
| PG-7 | __ | PG | Female | __ | 1/4 | NPT | Male | 0000000 | 00000 |
| PG-9 | __ | PG | Female | __ | 1/2 | NPT | Male | 0000000 | 00000 |
| PG-11 | __ | PG | Female | __ | 1/2 | NPT | Male | 000000 | 00000 |
| PG-13.5 | __ | PG | Female | __ | 1/2 | NPT | Male | 000000 | 00000 |
| PG-21 | __ | PG | Female | __ | 1/2 | NPT | Male | 0000000 | 00000 |
| PG-21 | __ | PG | Female | __ | 3/4 | NPT | Male | 000000 | 00000 |
| PG-29 | __ | PG | Female | __ | 1 | NPT | Male | 0000000 | 00000 |
PG × Metric | |||||||||
| PG-9 | __ | PG | Female | M16 | __ | Metric | Male | 0000000 | 0000 |
| PG-11 | __ | PG | Female | M20 | __ | Metric | Male | 0000000 | 0000 |
| PG-13.5 | __ | PG | Female | M20 | __ | Metric | Male | 0000000 | 0000 |
| PG-16 | __ | PG | Female | M20 | __ | Metric | Male | 0000000 | 0000 |
| PG-16 | __ | PG | Female | M25 | __ | Metric | Male | 0000000 | 00000 |
| PG-21 | __ | PG | Female | M25 | __ | Metric | Male | 0000000 | 00000 |
| PG-29 | __ | PG | Female | M32 | __ | Metric | Male | 0000000 | 00000 |
Nylon Plastic | |||||||||
NPT × Metric | |||||||||
| __ | 1/2 | NPT | Female | M16 | __ | Metric | Male | 0000000 | 0000 |
| __ | 1/2 | NPT | Female | M20 | __ | Metric | Male | 0000000 | 0000 |
NPT × PG | |||||||||
| __ | 1/2 | NPT | Female | PG-11 | __ | PG | Male | 0000000 | 0000 |
| __ | 1/2 | NPT | Female | PG-13.5 | __ | PG | Male | 0000000 | 0000 |
Metric × PG | |||||||||
| M16 | __ | Metric | Female | PG-9 | __ | PG | Male | 0000000 | 00000 |
| M20 | __ | Metric | Female | PG-16 | __ | PG | Male | 0000000 | 00000 |
| M25 | __ | Metric | Female | PG-16 | __ | PG | Male | 0000000 | 00000 |
| M32 | __ | Metric | Female | PG-21 | __ | PG | Male | 0000000 | 00000 |
| M32 | __ | Metric | Female | PG-29 | __ | PG | Male | 0000000 | 00000 |
PG × Metric | |||||||||
| PG-13.5 | __ | PG | Female | M25 | __ | Metric | Male | 0000000 | 00000 |
| PG-21 | __ | PG | Female | M32 | __ | Metric | Male | 0000000 | 00000 |
| PG-29 | __ | PG | Female | M40 | __ | Metric | Male | 0000000 | 00000 |
| PG-36 | __ | PG | Female | M50 | __ | Metric | Male | 0000000 | 00000 |