Metal Luer Lock Tube-to-Pipe Adapters

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Luer Lock Component

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UN/UNF (SAE Straight)

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

Yes

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REACH

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

Straight Body Shape

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48 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, 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

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

Brass Luer Lock Tube Couplings for Air

Quickly connect low-pressure air lines with these luer lock couplings. Made of brass, they are stronger and more durable than plastic tube couplings. These couplings have a nickel plating for extra protection against corrosive environments. 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’re easy to 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.

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

Plugs, Male Threaded Pipe

Temperature Range: -100° to 300° F

NPT Threads
Pipe Size	Thread Size	Thread Pitch, mm	Material	Max. Pressure	Features		Each
1/16	__	__	Nickel-Plated Brass	30 psi @ 72° F	__	51465K22	000000
1/8	__	__	Nickel-Plated Brass	30 psi @ 72° F	__	51465K155	0000
1/4	__	__	Nickel-Plated Brass	30 psi @ 72° F	__	51465K153	0000
Metric Threads
__	M5	0.8	Nickel-Plated Brass	30 psi @ 72° F	Acrylic Thread Sealant	51465K23	00000
__	M6	1	Nickel-Plated Brass	30 psi @ 72° F	Acrylic Thread Sealant	51465K24	00000
__	M8	1	Nickel-Plated Brass	30 psi @ 72° F	Acrylic Thread Sealant	51465K25	00000
UN/UNF (SAE Straight) Threads
__	10-32	__	Nickel-Plated Brass	30 psi @ 72° F	__	51465K151	0000
__	1/4"-28	__	Nickel-Plated Brass	30 psi @ 72° F	__	51465K21	0000

Plugs, Female Threaded Pipe

Temperature Range: -100° to 300° F

NPT Threads
Pipe Size	Thread Size	Material	Max. Pressure		Each
1/16	__	Nickel-Plated Brass	30 psi @ 72° F	51465K28	000000
1/8	__	Nickel-Plated Brass	30 psi @ 72° F	51465K29	00000
1/4	__	Nickel-Plated Brass	30 psi @ 72° F	51465K31	00000
UN/UNF (SAE Straight) Threads
__	10-32	Nickel-Plated Brass	30 psi @ 72° F	51465K27	0000
__	1/4"-28	Nickel-Plated Brass	30 psi @ 72° F	51465K26	0000

Sockets, Male Threaded Pipe

Temperature Range: -100° to 300° F

NPT Threads
Pipe Size	Thread Size	Thread Pitch, mm	Material	Max. Pressure	Features		Each
1/16	__	__	Nickel-Plated Brass	30 psi @ 72° F	__	51465K33	000000
1/8	__	__	Nickel-Plated Brass	30 psi @ 72° F	__	51465K34	00000
1/4	__	__	Nickel-Plated Brass	30 psi @ 72° F	__	51465K35	00000
Metric Threads
__	M5	0.8	Nickel-Plated Brass	30 psi @ 72° F	Acrylic Thread Sealant	51465K36	00000
__	M6	1	Nickel-Plated Brass	30 psi @ 72° F	Acrylic Thread Sealant	51465K37	00000
__	M8	1	Nickel-Plated Brass	30 psi @ 72° F	Acrylic Thread Sealant	51465K38	00000
UN/UNF (SAE Straight) Threads
__	10-32	__	Nickel-Plated Brass	30 psi @ 72° F	__	51465K161	0000
__	1/4"-28	__	Nickel-Plated Brass	30 psi @ 72° F	__	51465K32	0000

Sockets, Female Threaded Pipe

Temperature Range: -100° to 300° F

NPT Threads
Thread Size	Pipe Size	Material	Max. Pressure		Each
__	1/16	Nickel-Plated Brass	30 psi @ 72° F	51465K42	000000
__	1/8	Nickel-Plated Brass	30 psi @ 72° F	51465K43	00000
__	1/4	Nickel-Plated Brass	30 psi @ 72° F	51465K44	00000
UN/UNF (SAE Straight) Threads
10-32	__	Nickel-Plated Brass	30 psi @ 72° F	51465K41	00000
1/4"-28	__	Nickel-Plated Brass	30 psi @ 72° F	51465K39	00000