Grip-Lock Hose Sockets | McMaster-Carr

	Pipe Size Pipe Size

3/8

1/2

3/4

	Connection Style Connection Style

Claw

Threaded

Barbed

	Grip-Lock Component Grip-Lock Component

	Socket
	Plug

	Material Material

Steel

Brass

Stainless Steel

	For Use With For Use With

Air

Water

	Connection Type Connection Type


Hose	Pipe

	Gender Gender


Male	Female

	Claw Connection Type Claw Connection Type

Double Grip Lock

Grip Lock

	Maximum Temperature Maximum Temperature

175° F

250° F

	Minimum Temperature Minimum Temperature

-40° F

-20° F

	Maximum Vacuum Maximum Vacuum

22 in. of Hg @ 72° F

Not Rated

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

DFARS Specialty Metals
COTS-Exempt

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

RoHS Compliant with
Exemptions

RoHS Compliant

	Compatible With Compatible With

Dixon Dual Lock

Dixon Dix Lock

Perfecting N

	Length Length

	Thread Type Thread Type

NPTF

NPT

	For Hose ID For Hose ID

3/8"

1/2"

3/4"

	Specifications Met Specifications Met

MIL-A-A-50431

MIL-C-3486

	Barbed Connection Type Barbed Connection Type

	Clamp On
	Crimp On

	For Hose Material For Hose Material

Rubber

Plastic

	Attachment Type Attachment Type


Band-and- Buckle Clamp	Crimp-On Hose Ferrule

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

REACH Compliant

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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.

Also known as Thor couplings, these have two locking points to give you twice the gripping power of standard grip-lock couplings. To connect, push a plug and a socket (both sold separately) together with a quarter twist. Attach an optional locking ring (sold separately) to the socket for extra protection against accidental disconnection. All of the double grip-lock plugs are compatible with any of the double grip-lock sockets, regardless of the pipe size or barbed hose ID. Plugs and sockets are zinc-plated steel, which is strong and durable. They have fair corrosion resistance, so they should be used primarily in dry environments.

Sockets have a spring-loaded locking sleeve that automatically locks into place when you connect the coupling. To disconnect, slide the locking sleeve back and twist the coupling apart.

Sockets with a barbed end insert into rubber hose and secure with a clamp or a crimp-on hose ferrule.

NPTF (Dryseal) threads are compatible with NPT threads.

Warning: There is no valve in these couplings. Stop the flow of air and water before you disconnect the line.

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

Sockets, Male Threaded Pipe

Maximum Pressure: 300 psi @ 72° F
Maximum Vacuum: 22 in. of Hg @ 72° F
Temperature Range: -40° to 250° F
Compatible With: Dixon Dual Lock Couplings

Zinc-Plated Steel
Pipe Size	Thread Type	Spring Material		Each
3/8	NPTF	Bronze	0000000	000000
1/2	NPTF	Bronze	0000000	00000
3/4	NPTF	Bronze	0000000	00000

Optional Locking Rings (5/Pkg.)	0000000	Pkg.	00000
Replacement Gaskets (10/Pkg.)	0000000	Pkg.	00000

Sockets, Female Threaded Pipe

Maximum Pressure: 300 psi @ 72° F
Maximum Vacuum: 22 in. of Hg @ 72° F
Temperature Range: -40° to 250° F
Compatible With: Dixon Dual Lock Couplings

Zinc-Plated Steel
Pipe Size	Thread Type	Spring Material		Each
1/2	NPTF	Bronze	0000000	000000
3/4	NPTF	Bronze	0000000	00000

Optional Locking Rings (5/Pkg.)	0000000	Pkg.	00000
Replacement Gaskets (10/Pkg.)	0000000	Pkg.	00000

Sockets, Barbed Hose

Maximum Pressure: 300 psi @ 72° F
Maximum Vacuum: 22 in. of Hg @ 72° F
Temperature Range: -40° to 250° F
Attachment Type: Use Band-and-Buckle Clamps or Crimp-On Hose Ferrules
Compatible With: Dixon Dual Lock Couplings

Zinc-Plated Steel
For Hose ID	Spring Material		Each
3/8"	Bronze	0000000	000000
1/2"	Bronze	0000000	00000
3/4"	Bronze	0000000	00000
1"	Bronze	0000000	00000

Optional Locking Rings (5/Pkg.)	0000000	Pkg.	00000
Replacement Gaskets (10/Pkg.)	0000000	Pkg.	00000

Grip-Lock Hose Couplings for Air

Also known as Bowes couplings, these consist of a plug and a socket (both sold separately) that connect with a quarter twist. They can handle higher-pressures than twist-claw couplings, and have a lower profile to fit in cramped spaces. All of the grip-lock plugs are compatible with any of the grip-lock sockets, regardless of the pipe size or barbed hose ID.

Plugs have a spring-loaded locking sleeve to prevent accidental disconnection. The sleeve automatically locks into place when you connect the coupling. To disconnect, slide the locking sleeve back and twist the coupling apart.

Plugs and sockets with a barbed end insert into plastic or rubber hose and secure with a clamp.

Zinc-plated steel plugs and sockets are stronger and more durable than other metal plugs and sockets. They have fair corrosion resistance, so they should be used primarily in dry environments. Brass plugs and sockets are softer than other metal plugs and sockets, so they’re easier to thread together. They have good corrosion resistance. 303 stainless steel plugs and sockets have very good corrosion resistance. They’re the best choice for high-humidity environments.

NPTF (Dryseal) threads are compatible with NPT threads.

Warning: There is no valve in these couplings. Stop the flow of air before you disconnect the line.

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

Plugs, Male Threaded Pipe

Maximum Pressure: 300 psi @ 72° F
Maximum Vacuum: See table
Temperature Range: See table
Specifications Met: MIL-A-A-50431, MIL-C-3486
Compatible With: Dixon Dix Lock Couplings, Perfecting N Couplings

Zinc-Plated Steel
Pipe Size	Thread Type	Max. Vacuum	Temperature Range, °F		Each
3/8	NPTF	22 in. of Hg @ 72° F	-40° to 250°	0000000	000000
1/2	NPTF	22 in. of Hg @ 72° F	-40° to 250°	0000000	00000
3/4	NPTF	22 in. of Hg @ 72° F	-40° to 250°	0000000	00000
Brass
3/8	NPT	Not Rated	-20° to 175°	0000000	00000
1/2	NPT	Not Rated	-20° to 175°	0000000	00000
3/4	NPT	Not Rated	-20° to 175°	0000000	00000
303 Stainless Steel
3/4	NPTF	22 in. of Hg @ 72° F	-40° to 250°	0000000	00000

Plugs, Female Threaded Pipe

Maximum Pressure: 300 psi @ 72° F
Maximum Vacuum: See table
Temperature Range: See table
Specifications Met: MIL-A-A-50431, MIL-C-3486
Compatible With: Dixon Dix Lock Couplings, Perfecting N Couplings

Zinc-Plated Steel
Pipe Size	Thread Type	Max. Vacuum	Temperature Range, °F		Each
3/8	NPTF	22 in. of Hg @ 72° F	-40° to 250°	0000000	000000
1/2	NPTF	22 in. of Hg @ 72° F	-40° to 250°	0000000	00000
3/4	NPTF	22 in. of Hg @ 72° F	-40° to 250°	0000000	00000
Brass
3/8	NPTF	Not Rated	-20° to 175°	0000000	00000
1/2	NPTF	Not Rated	-20° to 175°	0000000	00000
3/4	NPTF	Not Rated	-20° to 175°	0000000	00000
303 Stainless Steel
3/4	NPTF	22 in. of Hg @ 72° F	-40° to 250°	0000000	00000

Plugs, Barbed Hose

Maximum Pressure: 300 psi @ 72° F
Maximum Vacuum: See table
Temperature Range: See table
Attachment Type: Use Band-and-Buckle Clamps
Specifications Met: MIL-A-A-50431, MIL-C-3486
Compatible With: Dixon Dix Lock Couplings, Perfecting N Couplings

Zinc-Plated Steel
For Hose ID	Max. Vacuum	Temperature Range, °F		Each
3/8"	22 in. of Hg @ 72° F	-40° to 250°	0000000	000000
1/2"	22 in. of Hg @ 72° F	-40° to 250°	0000000	00000
3/4"	22 in. of Hg @ 72° F	-40° to 250°	0000000	00000
Brass
1/2"	Not Rated	-20° to 175°	0000000	00000
3/4"	Not Rated	-20° to 175°	0000000	00000
303 Stainless Steel
3/4"	22 in. of Hg @ 72° F	-40° to 250°	0000000	00000

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How to Identify and Measure Fittings

Double Grip-Lock Hose Couplings for Air and Water

Grip-Lock Hose Couplings for Air