PG Thread Adapters | McMaster-Carr

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	Thread Size Thread Size

M12

	Thread Type Thread Type

Metric

NPT

	System of Measurement System of Measurement

Metric

	Connection Type Connection Type


Conduit	Cord Grip

Electrical Box

	Gender Gender

Male

Female

	Material Material

Brass

Plastic

	Finish Finish

Nickel Plated

	Type Type

	Adapter

	Shape Shape

	Straight

	Minimum Temperature Minimum Temperature

-49° to -25° F

-24° to 0° F

	Maximum Temperature Maximum Temperature

Less than 200° F

200° to 249° F

	Color Color

	Black

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56 Products

Conduit and Cord Grip Thread Adapters

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	Thread Type	Gender	Thread Size	Thread Type	Gender		Each
Nickel-Plated Brass
NPT × PG
1/2	NPT	Female	PG-9	PG	Male	0000000	000000
1/2	NPT	Female	PG-11	PG	Male	0000000	0000
1/2	NPT	Female	PG-13.5	PG	Male	0000000	0000
1/2	NPT	Female	PG-16	PG	Male	0000000	0000
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	PG	Male	0000000	0000
M25	Metric	Female	PG-16	PG	Male	0000000	0000
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	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 × PG
1/2	NPT	Female	PG-11	PG	Male	0000000	0000
1/2	NPT	Female	PG-13	PG	Male	0000000	0000
Metric × PG
M12	Metric	Female	PG-7	PG	Male	0000000	00000
M12	Metric	Female	PG-9	PG	Male	0000000	00000
M16	Metric	Female	PG-9	PG	Male	0000000	0000
M16	Metric	Female	PG-11	PG	Male	0000000	00000
M16	Metric	Female	PG-13	PG	Male	0000000	0000
M20	Metric	Female	PG-11	PG	Male	0000000	00000
M20	Metric	Female	PG-13	PG	Male	0000000	0000
M20	Metric	Female	PG-16	PG	Male	0000000	0000
M25	Metric	Female	PG-16	PG	Male	0000000	00000
M25	Metric	Female	PG-21	PG	Male	0000000	00000
M32	Metric	Female	PG-21	PG	Male	0000000	00000
M32	Metric	Female	PG-29	PG	Male	0000000	00000
M40	Metric	Female	PG-29	PG	Male	0000000	00000
M40	Metric	Female	PG-36	PG	Male	0000000	00000
M40	Metric	Female	PG-42	PG	Male	0000000	00000
M50	Metric	Female	PG-36	PG	Male	0000000	00000
M50	Metric	Female	PG-42	PG	Male	0000000	00000
M50	Metric	Female	PG-48	PG	Male	0000000	00000

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