Stainless Steel Luer Lock Tube Couplings

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50 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.

Stainless Steel Luer Lock Tube Couplings for Air and Water

Use these luer lock couplings to quickly connect low-pressure air and water lines. Made of stainless steel, they’re more durable than plastic couplings. Luer lock connections are universal, so you can connect any plug and socket to each other, regardless of the pipe or tube size. You can also connect them to syringes and needles. These couplings have a compact body, so they’ll fit in tight spaces. All are open-flow style, so there is no shut-off valve to stop the flow when the coupling is separated.

303 stainless steel couplings have very good corrosion resistance.

316 stainless steel couplings have excellent corrosion resistance.

Note: For a complete coupling, order a plug and a socket.

Plugs with Round Body, Barbed Tube

Temperature Range: 32° to 300° F
Tubing: Use with soft or firm (Durometer 35A-95A) polyurethane rubber, PVC plastic or silicone rubber

Barbed plugs and sockets insert into tubing and secure with a clamp.

303 Stainless Steel
For Tube ID	Max. Pressure		Each
7/32"	30 psi @ 72° F	5194K15	000000
316 Stainless Steel
7/32"	30 psi @ 72° F	5194K35	00000

Plugs with Hex Body, Barbed Tube

Temperature Range: 32° to 300° F
Tubing: Use with soft or firm (Durometer 35A-95A) polyurethane rubber, PVC plastic or silicone rubber

Barbed plugs and sockets insert into tubing and secure with a clamp.

316 Stainless Steel
For Tube ID	Max. Pressure		Each
1/16"	45 psi @ 72° F	6514N11	000000
1/8"	45 psi @ 72° F	6514N12	00000
3/16"	45 psi @ 72° F	6514N13	00000
5/16"	45 psi @ 72° F	6514N14	00000

Plugs with Round Body, Male Threaded Pipe

Temperature Range: 32° to 300° F

NPT Threads
Pipe Size	Thread Size	Max. Pressure		Each
316 Stainless Steel
1/8	__	30 psi @ 72° F	5194K44	000000
1/4	__	30 psi @ 72° F	5194K45	00000
UN/UNF (SAE Straight) Threads
303 Stainless Steel
__	1/4"-28	30 psi @ 72° F	5194K13	00000
316 Stainless Steel
__	10-32	30 psi @ 72° F	5194K43	00000
__	1/4"-28	30 psi @ 72° F	5194K33	00000

Plugs with Hex Body, Male Threaded Pipe

Temperature Range: 32° to 300° F

NPT Threads
Pipe Size	Thread Size	Max. Pressure		Each
316 Stainless Steel
1/8	__	45 psi @ 72° F	6514N22	000000
1/4	__	45 psi @ 72° F	6514N23	000000
UN/UNF (SAE Straight) Threads
316 Stainless Steel
__	10-32	45 psi @ 72° F	6514N19	00000
__	1/4"-28	45 psi @ 72° F	6514N21	00000

Plugs with Hex Body, Female Threaded Pipe

Temperature Range: 32° to 300° F

UN/UNF (SAE Straight) Threads
Thread Size	Max. Pressure		Each
316 Stainless Steel
10-32	45 psi @ 72° F	6514N24	000000

Plug-to-Socket Adapters with Hex Body

Temperature Range: 32° to 300° F

316 Stainless Steel
Max. Pressure		Each
45 psi @ 72° F	6514N31	0000000

Plugs with Round Body, Connector

Temperature Range: 32° to 300° F

303 Stainless Steel
Max. Pressure		Each
30 psi @ 72° F	5194K11	000000
316 Stainless Steel
30 psi @ 72° F	5194K31	00000

Plugs with Hex Body, Connector

Temperature Range: 32° to 300° F

316 Stainless Steel
Max. Pressure		Each
45 psi @ 72° F	6514N32	0000000

Plugs for Sockets with Round Body

Temperature Range: 32° to 300° F

303 Stainless Steel
Max. Pressure		Each
30 psi @ 72° F	5194K17	000000
316 Stainless Steel
30 psi @ 72° F	5194K37	00000

Plugs for Sockets with Hex Body

Temperature Range: 32° to 300° F

316 Stainless Steel
Max. Pressure		Each
45 psi @ 72° F	6514N35	000000

Sockets with Round Body, Barbed Tube

Temperature Range: 32° to 300° F
Tubing: Use with soft or firm (Durometer 35A-95A) polyurethane rubber, PVC plastic or silicone rubber

Barbed plugs and sockets insert into tubing and secure with a clamp.

303 Stainless Steel
For Tube ID	Max. Pressure		Each
1/8"	30 psi @ 72° F	5194K21	000000
7/32"	30 psi @ 72° F	5194K16	00000
316 Stainless Steel
1/8"	30 psi @ 72° F	5194K51	00000
7/32"	30 psi @ 72° F	5194K36	00000

Sockets with Hex Body, Barbed Tube

Temperature Range: 32° to 300° F
Tubing: Use with soft or firm (Durometer 35A-95A) polyurethane rubber, PVC plastic or silicone rubber

Barbed plugs and sockets insert into tubing and secure with a clamp.

316 Stainless Steel
For Tube ID	Max. Pressure		Each
1/16"	45 psi @ 72° F	6514N15	000000
1/8"	45 psi @ 72° F	6514N16	00000
3/16"	45 psi @ 72° F	6514N17	00000
5/16"	45 psi @ 72° F	6514N18	00000

Sockets with Round Body, Male Threaded Pipe

Temperature Range: 32° to 300° F

NPT Threads
Pipe Size	Thread Size	Max. Pressure		Each
316 Stainless Steel
1/8	__	30 psi @ 72° F	5194K47	000000
1/4	__	30 psi @ 72° F	5194K48	00000
UN/UNF (SAE Straight) Threads
303 Stainless Steel
__	1/4"-28	30 psi @ 72° F	5194K14	00000
316 Stainless Steel
__	10-32	30 psi @ 72° F	5194K46	00000
__	1/4"-28	30 psi @ 72° F	5194K34	00000

Sockets with Hex Body, Male Threaded Pipe

Temperature Range: 32° to 300° F

NPT Threads
Pipe Size	Thread Size	Thread Pitch, mm	Max. Pressure		Each
316 Stainless Steel
1/8	__	__	45 psi @ 72° F	6514N27	000000
1/4	__	__	45 psi @ 72° F	6514N28	00000
Metric Threads
303 Stainless Steel
__	M6	1	30 psi @ 72° F	5194K22	00000
316 Stainless Steel
__	M6	1	30 psi @ 72° F	5194K52	00000
UN/UNF (SAE Straight) Threads
316 Stainless Steel
__	10-32	__	45 psi @ 72° F	6514N25	00000
__	1/4"-28	__	45 psi @ 72° F	6514N26	00000

Sockets with Hex Body, Female Threaded Pipe

Temperature Range: 32° to 300° F

UN/UNF (SAE Straight) Threads
Thread Size	Max. Pressure		Each
316 Stainless Steel
10-32	45 psi @ 72° F	6514N29	000000

Sockets with Round Body, Connector

Temperature Range: 32° to 300° F

303 Stainless Steel
Max. Pressure		Each
30 psi @ 72° F	5194K12	000000
316 Stainless Steel
30 psi @ 72° F	5194K32	00000

Sockets with Hex Body, Connector

Temperature Range: 32° to 300° F

316 Stainless Steel
Max. Pressure		Each
45 psi @ 72° F	6514N33	000000

Caps for Plugs with Round Body

Temperature Range: 32° to 300° F

316 Stainless Steel
Max. Pressure		Each
30 psi @ 72° F	5194K38	000000

Caps for Plugs with Hex Body

Temperature Range: 32° to 300° F

316 Stainless Steel
Max. Pressure		Each
45 psi @ 72° F	6514N34	000000

Luer Lock Couplings for Stainless Steel Tubing

For Use With: Air
Temperature Range: -75° to 400° F
Tubing: Use with 304/304L or 316/316L Stainless Steel

Quickly connect low-pressure stainless steel lines with these couplings. Made of 316 stainless steel, they have excellent corrosion resistance. They’re easier to install than yor-lok or compression couplings—just insert tubing and twist the nut to seal—but they can’t handle as much pressure. Luer lock connections are universal, so you can connect any plug and socket to each other, regardless of the pipe or tube size. You can also connect them to syringes and needles. These couplings are open-flow style, so there is no shut-off valve to stop the flow when the coupling is separated. They have a compact body for installation in tight spaces.

Note: For a complete coupling, order a plug and a socket.

			Plug		Socket
For Tube OD	Material	Max. Pressure		Each		Each
1/64", 1/32", 3/64", 1/16", 5/64"	316 Stainless Steel	45 psi @ 72° F	5194K411	000000	5194K421	000000