Agricultural Couplings | McMaster-Carr

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Quick-Disconnect Component

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Quick-Disconnect Style

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

Exempt

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EAR99

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Compliant with Exemptions

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Maximum Vacuum @ Temperature

28 Products

About Measuring Fittings

Measure the threaded ends of your fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

Dust Caps and Plugs for Pioneer Quick-Disconnect
Hose Couplings for Hydraulic Fluid

Use these dust caps and plugs to keep contaminants out of your hose line.

Caps

Temperature Range: -40° to 250° F
Compatible With: Parker 4000, Parker 4200, SafeWay S20, SafeWay S40

Buna-N Rubber
Coupling Size	Choose a Color		Each
1/4	Black	5341K71	00000
3/8	Black	5341K72	0000
1/2	Black, Blue, Green, Red, Yellow	5341K73	0000
1	Black	5341K75	00000

End Plugs

Temperature Range: -40° to 250° F
Compatible With: Parker 4000, Parker 4200, SafeWay S20, SafeWay S40

Buna-N Rubber
Coupling Size	Choose a Color		Each
1/4	Black	5341K81	00000
3/8	Black	5341K96	0000
1/2	Black, Blue, Green, Red, Yellow	5341K97	0000
1	Black	5341K85	00000

Pioneer Quick-Disconnect Hose Couplings for Hydraulic Fluid

A complete coupling consists of a plug and a socket (both sold separately) that connect and disconnect quickly. Use them if you need frequent access to a hydraulic hose line. All of the Pioneer quick-disconnect plugs are compatible with any of the Pioneer quick-disconnect sockets of the same coupling size, regardless of the pipe size. Plugs are compatible with the Parker or SafeWay socket series listed. Also known as double shut-off couplings, the plugs and sockets both have a shut-off valve that stops the flow when the coupling is separated. Plugs and sockets are zinc- or chrome-plated steel, which are strong and durable with fair corrosion resistance.

Plugs are also known as nipples.

Sleeve-lock sockets connect by sliding back the sleeve on the socket, inserting the plug, and releasing the sleeve. To disconnect, slide the sleeve back and pull out the plug.

Push-to-connect sockets are easier to connect than sleeve-lock sockets. Connect by pushing the plug into the socket until you hear a click. To disconnect, slide the sleeve on the socket forward until the plug ejects.

Pioneer × ISO Minimal-Spill couplings let you adapt between different quick-disconnect styles. ISO Minimal-Spill quick-disconnect couplings are also known as ISO 16028 couplings.

Chrome-plated steel has a bright, shiny appearance.

Plugs and sockets with a gasket offer extra protection against leaks.

NPTF (Dryseal) threads are compatible with NPT threads.

Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size. Pressure ratings are given for static (constant) pressure conditions.

Warning: Never attempt to connect or disconnect couplings when operating at maximum pressure. Stop the flow before you disconnect the line.

Plugs, NPTF Female Threaded Pipe

Maximum Pressure: See table
Maximum Vacuum: See table
Temperature Range: -40° to 250° F
Compatible With: See table

Plugs
	Plug Tip									Optional Dust Caps
Coupling Size	Lg.	Dia.	Pipe Size	Dash Size	Max. Pressure	Max. Vacuum	Compatible With		Each	Choose a Color		Each
Zinc-Plated Steel
1/2	3/8"	13/16"	3/4	12	3,000 psi @ 72° F	Not Rated	SafeWay S40	5341K551	000000	Black, Blue, Green, Red, Yellow	5341K73	00000
Zinc-Plated Steel with Buna-N Rubber Gasket
1/4	5/16"	9/16"	1/4	04	3,000 psi @ 72° F	Not Rated	Parker 4000, SafeWay S40	5341K911	00000	Black	5341K71	0000
3/8	11/32"	3/4"	3/8	06	3,000 psi @ 72° F	Not Rated	Parker 4000, SafeWay S40	5341K921	00000	Black	5341K72	0000
1/2	3/8"	13/16"	1/2	08	3,000 psi @ 72° F	Not Rated	SafeWay S40	5341K931	00000	Black, Blue, Green, Red, Yellow	5341K73	0000
1/2	3/8"	13/16"	3/4	12	3,000 psi @ 72° F	Not Rated	SafeWay S40	5341K941	00000	Black, Blue, Green, Red, Yellow	5341K73	0000
Chrome-Plated Steel
1	5/8"	1 7/32"	1	16	3,000 psi @ 72° F	26 in. of Hg @ 72° F	Parker 4000, SafeWay S20	5341K561	00000	Black	5341K75	00000
Chrome-Plated Steel with Buna-N Rubber Gasket
1/4	5/16"	9/16"	1/4	04	4,000 psi @ 72° F	26 in. of Hg @ 72° F	Parker 4000, SafeWay S20	5341K571	0000	Black	5341K71	0000
3/8	11/32"	3/4"	3/8	06	4,000 psi @ 72° F	26 in. of Hg @ 72° F	Parker 4000, SafeWay S20	5341K531	00000	Black	5341K72	0000
1/2	3/8"	13/16"	1/2	08	4,000 psi @ 72° F	26 in. of Hg @ 72° F	Parker 4000, SafeWay S20	5341K541	0000	Black, Blue, Green, Red, Yellow	5341K73	0000

Sleeve-Lock Sockets, NPTF Female Threaded Pipe

Maximum Pressure: 3,000 psi @ 72° F
Maximum Vacuum: Not Rated
Temperature Range: -40° to 250° F
Compatible With: Parker 4000, SafeWay S20

Sockets
	For Plug Tip						Optional Dust Plugs
Coupling Size	Lg.	Dia.	Pipe Size	Dash Size		Each	Choose a Color		Each
Zinc-Plated Steel
1/2	3/8"	13/16"	1/2	08	5341K481	000000	Black, Blue, Green, Red, Yellow	5341K97	00000
Zinc-Plated Steel with Buna-N Rubber Gasket
1/4	5/16"	9/16"	1/4	04	5341K241	00000	Black	5341K81	0000
3/8	11/32"	3/4"	3/8	06	5341K251	00000	Black	5341K96	0000
1/2	3/8"	13/16"	1/2	08	5341K261	00000	Black, Blue, Green, Red, Yellow	5341K97	0000
1	5/8"	1 7/32"	1	16	5341K511	000000	Black	5341K85	00000

Sleeve-Lock Sockets, BSPP Female Threaded Pipe

Maximum Pressure: 3,000 psi @ 72° F
Maximum Vacuum: Not Rated
Temperature Range: -40° to 250° F
Compatible With: Parker 4200, SafeWay S40

	For Plug Tip
Coupling Size	Lg.	Dia.	Pipe Size	Dash Size		Each
Zinc-Plated Steel with Buna-N Rubber Gasket
1/2	3/8"	13/16"	1/2	08	5341K962	000000

Push-to-Connect Sockets, NPTF Female Threaded Pipe

Maximum Pressure: See table
Maximum Vacuum: See table
Temperature Range: -40° to 250° F
Compatible With: Parker 4000, SafeWay S20

Sockets
	For Plug Tip								Optional Dust Plugs
Coupling Size	Lg.	Dia.	Pipe Size	Dash Size	Max. Pressure	Max. Vacuum		Each	Choose a Color		Each
Zinc-Plated Steel
3/8	11/32"	3/4"	3/8	06	3,000 psi @ 72° F	Not Rated	5341K471	000000	Black	5341K96	00000
Chrome-Plated Steel with Buna-N Rubber Gasket
1/2	3/8"	13/16"	1/2	08	4,000 psi @ 72° F	26 in. of Hg @ 72° F	5341K621	00000	Black, Blue, Green, Red, Yellow	5341K97	0000
1/2	3/8"	13/16"	3/4	12	4,000 psi @ 72° F	26 in. of Hg @ 72° F	5341K491	00000	Black, Blue, Green, Red, Yellow	5341K97	0000

Pioneer Sleeve-Lock Socket × ISO Minimal-Spill Plug

Maximum Pressure: 4,000 psi @ 72° F
Maximum Vacuum: 26 in. of Hg @ 72° F
Temperature Range: -40° to 250° F
Compatible With: Parker 4200, SafeWay S20

	Plug Tip		For Plug Tip
Coupling Size	Lg.	Dia.	Lg.	Dia.		Each
Zinc-Plated Steel with Buna-N Rubber Gasket
1/2	3/8"	15/16"	3/8"	13/16"	5341K42	000000

Pioneer Plug × ISO Minimal-Spill Push-to-Connect Socket

Maximum Pressure: 4,000 psi @ 72° F
Maximum Vacuum: Not Rated
Temperature Range: -40° to 250° F
Compatible With: Parker 4200, SafeWay S20

	Plug Tip		For Plug Tip
Coupling Size	Lg.	Dia.	Lg.	Dia.		Each
Zinc-Plated Steel with Buna-N Rubber Gasket
1/2	3/8"	13/16"	3/8"	15/16"	5341K41	000000

Dust Caps and Plugs for Pioneer Quick-DisconnectHose Couplings for Hydraulic Fluid

Pioneer Quick-Disconnect Hose Couplings for Hydraulic Fluid

Dust Caps and Plugs for Pioneer Quick-Disconnect
Hose Couplings for Hydraulic Fluid