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About Conduit
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Compare rigid and flexible conduit materials and identify the trade size for compatible fittings.
Conduit and Cord Grip Thread Adapters
NPT × Metric
Metric × PG
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.
Conduit and Cord Grip Connection | Electrical Box Connection | |||||||
|---|---|---|---|---|---|---|---|---|
Thread Size | Pipe Size | Thread Type | Gender | Thread Size | Thread Type | Gender | Each | |
Nickel-Plated Brass | ||||||||
NPT × Metric | ||||||||
| __ | 1/2 | NPT | Female | M16 | Metric | Male | 7537K1 | 000000 |
| __ | 1/2 | NPT | Female | M20 | Metric | Male | 7537K2 | 00000 |
| __ | 1/2 | NPT | Female | M25 | Metric | Male | 7537K3 | 00000 |
| __ | 3/4 | NPT | Female | M25 | Metric | Male | 7537K4 | 00000 |
| __ | 1 | NPT | Female | M32 | Metric | Male | 7537K5 | 00000 |
| __ | 1 1/4 | NPT | Female | M32 | Metric | Male | 7537K6 | 00000 |
Metric × PG | ||||||||
| M16 | __ | Metric | Female | PG-9 | PG | Male | 7805K18 | 0000 |
| M20 | __ | Metric | Female | PG-11 | PG | Male | 7805K19 | 0000 |
| M20 | __ | Metric | Female | PG-13.5 | PG | Male | 7805K21 | 0000 |
| M25 | __ | Metric | Female | PG-16 | PG | Male | 7805K22 | 00000 |
PG × Metric | ||||||||
| PG-9 | __ | PG | Female | M16 | Metric | Male | 7805K11 | 0000 |
| PG-16 | __ | PG | Female | M20 | Metric | Male | 7805K14 | 00000 |
| PG-16 | __ | PG | Female | M25 | Metric | Male | 7805K15 | 00000 |
| PG-21 | __ | PG | Female | M25 | Metric | Male | 7805K16 | 00000 |
| PG-29 | __ | PG | Female | M32 | Metric | Male | 7805K17 | 00000 |
Nylon Plastic | ||||||||
NPT × Metric | ||||||||
| __ | 1/2 | NPT | Female | M16 | Metric | Male | 7805K55 | 0000 |
| __ | 1/2 | NPT | Female | M20 | Metric | Male | 7805K56 | 00000 |
Metric × PG | ||||||||
| M16 | __ | Metric | Female | PG-9 | PG | Male | 7805K36 | 00000 |
| M20 | __ | Metric | Female | PG-16 | PG | Male | 7805K42 | 00000 |
| M25 | __ | Metric | Female | PG-16 | PG | Male | 7805K43 | 00000 |
| M32 | __ | Metric | Female | PG-21 | PG | Male | 7805K45 | 00000 |
| M32 | __ | Metric | Female | PG-29 | PG | Male | 7805K46 | 00000 |
PG × Metric | ||||||||
| PG-13.5 | __ | PG | Female | M25 | Metric | Male | 7805K26 | 00000 |
| PG-21 | __ | PG | Female | M32 | Metric | Male | 7805K28 | 00000 |
| PG-29 | __ | PG | Female | M40 | Metric | Male | 7805K29 | 00000 |
| PG-36 | __ | PG | Female | M50 | Metric | Male | 7805K31 | 00000 |