Couplings for Varnish | McMaster-Carr

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	Coupling Size Coupling Size

3/4

1 1/2

	Pipe Size Pipe Size

1/2
3/4
1
1 1/4
1 1/2
2
3
4

	Thread Type Thread Type

BSPP

BSPT

NPT

	Cam-and-Groove Component Cam-and-Groove Component


Plug	Socket

	Material Material

Plastic

	Connection Style Connection Style

Threaded

Barbed

Cam-and-Groove

	Gender Gender


Female	Male

	Color Color

	Yellow

	Type Type


Adapter	Plug

Cap

	Shape Shape

	Straight
	Cap/Plug

	Connection Type Connection Type


Pipe	Hose

	For Use With For Use With	Show

Varnish

	For Use With For Use With	Hide

Warning: Products have one, but not necessarily all, of the selected characteristics.

Dichlorotetrafluoroethane

Hydrochloric Acid (30%)

Silicon Tetrafluoride

Sludge

Soap Solutions

Sodium Carbonate

Sodium Carbonate
(20% in Water)

Tungsten Hexafluoride

	System of Measurement System of Measurement

Inch

	For Hose ID For Hose ID

	Maximum Temperature Maximum Temperature

100° to 249° F

	Minimum Temperature Minimum Temperature

-49° to 0° F

	Length Length

	Maximum Pressure Maximum Pressure

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Specifications Met Specifications Met

Fed. Spec.

	Flow Control Flow Control

	Open

	Plug OD Plug OD

75 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

Made of plastic, these couplings are lighter in weight than metal cam-and-groove hose couplings, yet have the chemical resistance to withstand gasoline and other harsh substances. A complete coupling consists of a plug and a socket (both sold separately) that allow you to quickly connect and disconnect medium-to large-diameter hose lines. To connect, insert the plug into the socket and press the levers down. The levers fit snugly into the groove on the plug’s body and force the plug against the gasket to form a tight seal. To disconnect, lift both levers and pull out the plug.

Plugs with male threaded end are also known as F adapters.

Plugs with female threaded end are also known as A adapters.

Plugs with barbed end are also known as E adapters. Insert the barbed end into rubber hose and secure with a clamp.

Sockets with locking levers prevent accidental disconnection. The locking pins engage automatically when the coupling is connected. Press the locking pins simultaneously to disengage.

Sockets with male threaded end are also known as B couplers.

Sockets with female threaded end are also known as D couplers.

Sockets with barbed end are also known as C couplers. Insert the barbed end into rubber hose and secure with a clamp.

Nylon plugs and sockets have better strength than PVDF plugs and sockets. They have good corrosion and chemical resistance to handle gasoline and fuel applications.

Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.

Warning: Relieve all pressure before disconnecting the couplings. Do not use cam-and-groove couplings with compressed air or gas.

For technical drawings and 3-D models, click on a part number.

Straight Plugs, Male Threaded Plug

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: See table
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

Nylon Plastic
Coupling Size	Plug OD	Pipe Size	Thread Type	Color	Max. Pressure		Each
3/4	1 1/4"	1/2	NPT	Yellow	125 psi @ 72° F	0000000	00000
3/4	1 1/4"	3/4	NPT	Yellow	125 psi @ 72° F	0000000	0000
1	1 7/16"	1	NPT	Yellow	125 psi @ 72° F	0000000	0000
1 1/2	2 1/8"	1 1/4	NPT	Yellow	100 psi @ 72° F	0000000	0000
1 1/2	2 1/8"	1 1/2	NPT	Yellow	100 psi @ 72° F	0000000	0000
1 1/2	2 1/8"	1 1/2	BSPT	Yellow	150 psi @ 72° F	0000000	0000
2	2 1/2"	2	NPT	Yellow	100 psi @ 72° F	0000000	0000
2	2 1/2"	2	BSPT	Yellow	150 psi @ 72° F	0000000	0000
3	3 5/8"	3	NPT	Yellow	50 psi @ 72° F	0000000	00000
3	3 5/8"	3	BSPT	Yellow	100 psi @ 72° F	0000000	00000
4	4 3/4"	4	NPT	Yellow	50 psi @ 72° F	0000000	00000

Straight Plugs, Female Threaded Plug

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: See table
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

Nylon Plastic
Coupling Size	Plug OD	Pipe Size	Thread Type	Color	Max. Pressure		Each
3/4	1 1/4"	1/2	NPT	Yellow	125 psi @ 72° F	0000000	00000
3/4	1 1/4"	3/4	NPT	Yellow	125 psi @ 72° F	0000000	0000
1	1 7/16"	1	NPT	Yellow	125 psi @ 72° F	0000000	0000
1 1/2	2 1/8"	1 1/4	NPT	Yellow	100 psi @ 72° F	0000000	0000
1 1/2	2 1/8"	1 1/2	NPT	Yellow	100 psi @ 72° F	0000000	0000
2	2 1/2"	2	NPT	Yellow	100 psi @ 72° F	0000000	0000
2	2 1/2"	2	BSPP	Yellow	150 psi @ 72° F	0000000	0000
3	3 5/8"	3	NPT	Yellow	50 psi @ 72° F	0000000	00000
4	4 3/4"	4	NPT	Yellow	50 psi @ 72° F	0000000	00000

Straight Plugs, Barbed Hose

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: See table
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Attachment Type: Use Worm-Drive Clamps or Band-and-Buckle Clamps
Specifications Met: Fed. Spec. A-A-59326

Nylon Plastic
Coupling Size	Plug OD	For Hose ID	Color	Max. Pressure		Each
3/4	1 1/4"	1/2"	Yellow	125 psi @ 72° F	0000000	00000
3/4	1 1/4"	3/4"	Yellow	125 psi @ 72° F	0000000	0000
1	1 7/16"	1"	Yellow	125 psi @ 72° F	0000000	0000
1 1/2	2 1/8"	1 1/4"	Yellow	100 psi @ 72° F	0000000	0000
1 1/2	2 1/8"	1 1/2"	Yellow	100 psi @ 72° F	0000000	0000
2	2 1/2"	2"	Yellow	100 psi @ 72° F	0000000	0000
3	3 5/8"	3"	Yellow	50 psi @ 72° F	0000000	00000
4	4 3/4"	4"	Yellow	50 psi @ 72° F	0000000	00000

End Plugs

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: See table
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

Nylon Plastic
Coupling Size	Plug OD	Color	Max. Pressure		Each
3/4	1 1/4"	Yellow	125 psi @ 72° F	0000000	00000
1	1 7/16"	Yellow	125 psi @ 72° F	0000000	0000
1 1/2	2 1/8"	Yellow	100 psi @ 72° F	0000000	0000
2	2 1/2"	Yellow	100 psi @ 72° F	0000000	0000
3	3 5/8"	Yellow	50 psi @ 72° F	0000000	00000
4	4 3/4"	Yellow	50 psi @ 72° F	0000000	00000

Straight Sockets with Locking Levers, Male Threaded Pipe

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: See table
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

Sockets
					Levers						Replacement Gaskets
Coupling Size	Socket ID	Pipe Size	Thread Type	Color	No. of	Material	Pull Ring Material	Max. Pressure		Each	Pkg. Qty.		Pkg.
Nylon Plastic
1 1/2	2 1/8"	1 1/4	NPT	Yellow	2	304 Stainless Steel	302 Stainless Steel	100 psi @ 72° F	00000000	000000	10	0000000	000000
1 1/2	2 1/8"	1 1/2	NPT	Yellow	2	304 Stainless Steel	302 Stainless Steel	100 psi @ 72° F	00000000	00000	10	0000000	00000
2	2 1/2"	2	NPT	Yellow	2	304 Stainless Steel	302 Stainless Steel	100 psi @ 72° F	00000000	00000	10	0000000	00000
2	2 1/2"	2	BSPT	Yellow	2	304 Stainless Steel	302 Stainless Steel	150 psi @ 72° F	0000000	00000	10	0000000	00000
3	3 5/8"	3	NPT	Yellow	2	304 Stainless Steel	302 Stainless Steel	50 psi @ 72° F	00000000	00000	10	0000000	00000
4	4 3/4"	4	NPT	Yellow	2	304 Stainless Steel	302 Stainless Steel	50 psi @ 72° F	00000000	00000	10	0000000	00000

Straight Sockets with Locking Levers, Female Threaded Pipe

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: See table
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

Sockets
					Levers						Replacement Gaskets
Coupling Size	Socket ID	Pipe Size	Thread Type	Color	No. of	Material	Pull Ring Material	Max. Pressure		Each	Pkg. Qty.		Pkg.
Nylon Plastic
1 1/2	2 1/8"	1 1/4	NPT	Yellow	2	304 Stainless Steel	302 Stainless Steel	100 psi @ 72° F	00000000	000000	10	0000000	000000
1 1/2	2 1/8"	1 1/2	NPT	Yellow	2	304 Stainless Steel	302 Stainless Steel	100 psi @ 72° F	00000000	00000	10	0000000	00000
1 1/2	2 1/8"	1 1/2	BSPP	Yellow	2	304 Stainless Steel	302 Stainless Steel	150 psi @ 72° F	0000000	00000	10	0000000	00000
2	2 1/2"	2	NPT	Yellow	2	304 Stainless Steel	302 Stainless Steel	100 psi @ 72° F	00000000	00000	10	0000000	00000
2	2 1/2"	2	BSPP	Yellow	2	304 Stainless Steel	302 Stainless Steel	150 psi @ 72° F	0000000	00000	10	0000000	00000
3	3 5/8"	3	NPT	Yellow	2	304 Stainless Steel	302 Stainless Steel	50 psi @ 72° F	00000000	00000	10	0000000	00000
4	4 3/4"	4	NPT	Yellow	2	304 Stainless Steel	302 Stainless Steel	50 psi @ 72° F	00000000	00000	10	0000000	00000

Straight Sockets with Locking Levers, Barbed Hose

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: See table
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Attachment Type: Use Worm-Drive Clamps or Band-and-Buckle Clamps
Specifications Met: Fed. Spec. A-A-59326

Sockets
				Levers						Replacement Gaskets
Coupling Size	Socket ID	For Hose ID	Color	No. of	Material	Pull Ring Material	Max. Pressure		Each	Pkg. Qty.		Pkg.
Nylon Plastic
1 1/2	2 1/8"	1 1/4"	Yellow	2	304 Stainless Steel	302 Stainless Steel	100 psi @ 72° F	00000000	000000	10	0000000	000000
1 1/2	2 1/8"	1 1/2"	Yellow	2	304 Stainless Steel	302 Stainless Steel	100 psi @ 72° F	00000000	00000	10	0000000	00000
2	2 1/2"	2"	Yellow	2	304 Stainless Steel	302 Stainless Steel	100 psi @ 72° F	00000000	00000	10	0000000	00000
3	3 5/8"	3"	Yellow	2	304 Stainless Steel	302 Stainless Steel	50 psi @ 72° F	00000000	00000	10	0000000	00000
4	4 3/4"	4"	Yellow	2	304 Stainless Steel	302 Stainless Steel	50 psi @ 72° F	00000000	00000	10	0000000	00000

Caps with Locking Levers

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: See table
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

Caps
			Levers						Replacement Gaskets
Coupling Size	Socket ID	Color	No. of	Material	Pull Ring Material	Max. Pressure		Each	Pkg. Qty.		Pkg.
Nylon Plastic
1 1/2	2 1/8"	Yellow	2	304 Stainless Steel	302 Stainless Steel	100 psi @ 72° F	00000000	000000	10	0000000	000000
2	2 1/2"	Yellow	2	304 Stainless Steel	302 Stainless Steel	100 psi @ 72° F	00000000	00000	10	0000000	00000
3	3 5/8"	Yellow	2	304 Stainless Steel	302 Stainless Steel	50 psi @ 72° F	00000000	00000	10	0000000	00000
4	4 3/4"	Yellow	2	304 Stainless Steel	302 Stainless Steel	50 psi @ 72° F	00000000	00000	10	0000000	00000

Straight Sockets, Male Threaded Pipe

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: 125 psi @ 72° F
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

Sockets
					Levers				Replacement Gaskets
Coupling Size	Socket ID	Pipe Size	Thread Type	Color	No. of	Material		Each	Pkg. Qty.		Pkg.
Nylon Plastic
3/4	1 1/4"	1/2	NPT	Yellow	2	304 Stainless Steel	00000000	000000	10	0000000	00000
3/4	1 1/4"	3/4	NPT	Yellow	2	304 Stainless Steel	00000000	00000	10	0000000	0000
1	1 7/16"	1	NPT	Yellow	2	304 Stainless Steel	00000000	00000	10	0000000	0000

Straight Sockets, Female Threaded Pipe

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: 125 psi @ 72° F
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

Sockets
					Levers				Replacement Gaskets
Coupling Size	Socket ID	Pipe Size	Thread Type	Color	No. of	Material		Each	Pkg. Qty.		Pkg.
Nylon Plastic
3/4	1 1/4"	1/2	NPT	Yellow	2	304 Stainless Steel	00000000	000000	10	0000000	00000
3/4	1 1/4"	3/4	NPT	Yellow	2	304 Stainless Steel	00000000	00000	10	0000000	0000
1	1 7/16"	1	NPT	Yellow	2	304 Stainless Steel	00000000	00000	10	0000000	0000

Straight Sockets, Barbed Hose

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: 125 psi @ 72° F
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Attachment Type: Use Worm-Drive Clamps or Band-and-Buckle Clamps
Specifications Met: Fed. Spec. A-A-59326

Sockets
				Levers				Replacement Gaskets
Coupling Size	Socket ID	For Hose ID	Color	No. of	Material		Each	Pkg. Qty.		Pkg.
Nylon Plastic
3/4	1 1/4"	1/2"	Yellow	2	304 Stainless Steel	00000000	000000	10	0000000	00000
3/4	1 1/4"	3/4"	Yellow	2	304 Stainless Steel	00000000	00000	10	0000000	0000
1	1 7/16"	1"	Yellow	2	304 Stainless Steel	00000000	00000	10	0000000	0000

Caps

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: 125 psi @ 72° F
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

Caps
			Levers				Replacement Gaskets
Coupling Size	Socket ID	Color	No. of	Material		Each	Pkg. Qty.		Pkg.
Nylon Plastic
3/4	1 1/4"	Yellow	2	304 Stainless Steel	00000000	00000	10	0000000	00000
1	1 7/16"	Yellow	2	304 Stainless Steel	00000000	00000	10	0000000	0000

Plastic Barbed Hose Fittings for Chemicals and Petroleum

Made of plastic, these fittings are lighter in weight than metal barbed fittings, yet have the chemical and corrosion resistance to stand up to harsh substances. Slide the barbed end into plastic or rubber hose and secure with a clamp. Also known as hose nipples, they adapt a barbed end to a threaded end.

Nylon fittings are stronger than PVDF fittings. They have good corrosion and chemical resistance to handle gasoline and other fuel applications.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Hose × BSPT Male Threaded Pipe

For Use With: Citric Acid, Diesel Fuel, Gasoline, Mineral Oil, Varnish
Maximum Pressure: 150 psi @ 72° F
Temperature Range: -30° to 200° F
Attachment Type: Use Worm-Drive Clamps or Bolt Clamps

Nylon Plastic
For Hose ID	Pipe Size	Color		Each
1 1/2"	1 1/2	Yellow	0000000	00000
2"	2	Yellow	0000000	0000

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How to Identify and Measure Fittings

Plastic Cam-and-Groove Hose Couplings for Chemicals and Petroleum

Plastic Barbed Hose Fittings for Chemicals and Petroleum