Thermocouple Jacks | McMaster-Carr

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Exempt

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REACH

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Panel Cutout Width

Panel Cutout Height

Pin Length

Length

Panel Cutout Diameter

7/8"

1 1/8"

Distance Between Pins

184 Products

Panel-Mount Thermocouple Connector Strips

Create an easy way to plug in multiple thermocouples—these connector strips mount directly into your control panel. With at least two connections on each strip, you can plug in multiple thermocouples to monitor temperature at different points in your process. Each socket is numbered to help identify thermocouples and keep your wires organized. Choose a connector strip with a thermocouple type that matches the type of thermocouple you’re plugging in. You should also make sure the equipment you’re connecting it to is also compatible with the same thermocouple type.

Flat-Pin Mini Thermocouple Connector Connection—Connection strips for flat-pin mini thermocouple connectors install from the rear of your panel. They snap into place with spring clips.

Round-Pin Thermocouple Connector Connection—Connection strips for round-pin thermocouple connectors install from the front of your panel. Just tighten the screws on the front of the strip and T-nuts will hold it in place against your panel.

Mounting Frames—Add a mounting frame (sold separately) if your panel opening is larger than the cutout dimensions. When using a mounting frame, install your connection strip into the frame before attaching the entire assembly to your panel opening. Use the frame's mounting holes to secure your fasteners.

	Connectors											Mounting Frames
				For Panel Cutout			Material
	Thermocouple Type	No. of Connections	For Max. Wire Ga.	Wd.	Ht.	Color	Body	Contact	Fasteners Included		Each		Each
Female Flat-Pin Mini Thermocouple Connectors—400° F Max. Temp.
Flat-Pin Strip






				Screw-Terminal Wire Connection

				J	2	24	1 1/4"	1"	Black	Plastic	Iron	Yes	0000000	000000	0000000	000000


				J	4	24	2 5/8"	1"	Black	Plastic	Iron	Yes	0000000	00000	0000000	00000
				J	6	24	4"	1"	Black	Plastic	Iron	Yes	0000000	00000	0000000	00000
				J	8	24	5 3/8"	1"	Black	Plastic	Iron	Yes	0000000	00000	0000000	00000
				K	2	24	1 1/4"	1"	Yellow	Plastic	Nickel	Yes	0000000	00000	0000000	00000
				K	4	24	2 5/8"	1"	Yellow	Plastic	Nickel	Yes	0000000	00000	0000000	00000
				K	6	24	4"	1"	Yellow	Plastic	Nickel	Yes	0000000	00000	0000000	00000
				K	8	24	5 3/8"	1"	Yellow	Plastic	Nickel	Yes	0000000	00000	0000000	00000
				T	2	24	1 1/4"	1"	Blue	Plastic	Copper	Yes	0000000	00000	0000000	00000
				T	4	24	2 5/8"	1"	Blue	Plastic	Copper	Yes	0000000	00000	0000000	00000
				T	6	24	4"	1"	Blue	Plastic	Copper	Yes	0000000	00000	0000000	00000


				T	8	24	5 3/8"	1"	Blue	Plastic	Copper	Yes	0000000	00000	0000000	00000


				Female Flat-Pin Mini Thermocouple Connectors—800° F Max. Temp.
				Flat-Pin Strip






								Screw-Terminal Wire Connection

								J	2	24	1 1/4"	1"	Red	Plastic	Iron	Yes	00000000	00000	0000000	00000


								J	4	24	2 5/8"	1"	Red	Plastic	Iron	Yes	00000000	00000	0000000	00000
								J	6	24	4"	1"	Red	Plastic	Iron	Yes	00000000	00000	0000000	00000
								J	8	24	5 3/8"	1"	Red	Plastic	Iron	Yes	00000000	000000	0000000	00000
								K	2	24	1 1/4"	1"	Red	Plastic	Nickel	Yes	00000000	00000	0000000	00000
								K	4	24	2 5/8"	1"	Red	Plastic	Nickel	Yes	00000000	00000	0000000	00000
								K	6	24	4"	1"	Red	Plastic	Nickel	Yes	00000000	00000	0000000	00000
								K	8	24	5 3/8"	1"	Red	Plastic	Nickel	Yes	00000000	000000	0000000	00000


								Female Round-Pin Thermocouple Connectors—400° F Max. Temp.
								Round-Pin Strip






												Screw-Terminal Wire Connection

												J	2	16	1 5/16"	1 1/4"	Black	Plastic	Iron	Yes	0000000	00000	0000000	00000


												J	4	16	2 13/16"	1 1/4"	Black	Plastic	Iron	Yes	0000000	00000	0000000	00000
												J	6	16	4 5/16"	1 1/4"	Black	Plastic	Iron	Yes	0000000	00000	0000000	00000
J												8	16	5 13/16"	1 1/4"	Black	Plastic	Iron	Yes	0000000	00000	0000000	00000
J	10											16	7 5/16"	1 1/4"	Black	Plastic	Iron	Yes	00000000	00000	0000000	00000
J	12											16	8 13/16"	1 1/4"	Black	Plastic	Iron	Yes	00000000	000000	0000000	00000
K	2											16	1 5/16"	1 1/4"	Yellow	Plastic	Nickel	Yes	0000000	00000	0000000	00000
K	4											16	2 13/16"	1 1/4"	Yellow	Plastic	Nickel	Yes	0000000	00000	0000000	00000
K	6	16										4 5/16"	1 1/4"	Yellow	Plastic	Nickel	Yes	0000000	00000	0000000	00000
K	8	16	5 13/16"									1 1/4"	Yellow	Plastic	Nickel	Yes	0000000	00000	0000000	00000
K	10	16	7 5/16"									1 1/4"	Yellow	Plastic	Nickel	Yes	00000000	00000	0000000	00000


K	12	16	8 13/16"									1 1/4"	Yellow	Plastic	Nickel	Yes	00000000	000000	0000000	00000
T	2	16	1 5/16"									1 1/4"	Blue	Plastic	Copper	Yes	0000000	00000	0000000	00000
T	4	16	2 13/16"									1 1/4"	Blue	Plastic	Copper	Yes	0000000	00000	0000000	00000
T	6	16	4 5/16"									1 1/4"	Blue	Plastic	Copper	Yes	0000000	00000	0000000	00000
T	8	16	5 13/16"									1 1/4"	Blue	Plastic	Copper	Yes	0000000	00000	0000000	00000
T	10	16	7 5/16"									1 1/4"	Blue	Plastic	Copper	Yes	00000000	00000	0000000	00000
T	12	16	8 13/16"									1 1/4"	Blue	Plastic	Copper	Yes	00000000	000000	0000000	00000


Female Round-Pin Thermocouple Connectors—800° F Max. Temp.
Round-Pin Strip






												Screw-Terminal Wire Connection

				J								2	16	1 5/16"	1 1/4"	Red	Plastic	Iron	Yes	00000000	00000	0000000	00000


				J	4							16	2 13/16"	1 1/4"	Red	Plastic	Iron	Yes	00000000	00000	0000000	00000
				J	6							16	4 5/16"	1 1/4"	Red	Plastic	Iron	Yes	00000000	00000	0000000	00000
				J	8	16						5 13/16"	1 1/4"	Red	Plastic	Iron	Yes	00000000	000000	0000000	00000
				J	10	16	7 5/16"					1 1/4"	Red	Plastic	Iron	Yes	00000000	000000	0000000	00000
				J	12	16	8 13/16"					1 1/4"	Red	Plastic	Iron	Yes	00000000	000000	0000000	00000
				K	2	16	1 5/16"					1 1/4"	Red	Plastic	Nickel	Yes	00000000	00000	0000000	00000
				K	4	16	2 13/16"					1 1/4"	Red	Plastic	Nickel	Yes	00000000	00000	0000000	00000
				K	6	16	4 5/16"					1 1/4"	Red	Plastic	Nickel	Yes	00000000	00000	0000000	00000
				K	8	16	5 13/16"					1 1/4"	Red	Plastic	Nickel	Yes	00000000	000000	0000000	00000
				K	10	16	7 5/16"					1 1/4"	Red	Plastic	Nickel	Yes	00000000	000000	0000000	00000


				K	12	16	8 13/16"					1 1/4"	Red	Plastic	Nickel	Yes	00000000	000000	0000000	00000

Panel-Mount Thermocouple Connectors


Flat-Pin Connector	Round-Pin Connector

Create a connection point on a control panel to plug in thermocouples. These connectors can be wired and installed entirely from the front of your panel.

							Material
	Thermocouple Type	No. of Connections	For Max. Wire Ga.	For Panel Cutout Dia.	For Knockout Trade Size	Color	Body	Contact	Fasteners Included	Includes		Each
Female Flat-Pin Mini Thermocouple Connectors—400° F Max. Temp.







				Screw-Terminal Wire Connection

				J	1	20	7/8", 1 1/8"	1/2, 3/4	Black	Plastic	Iron	Yes	Knockout Adapter	0000000	000000


				K	1	20	7/8", 1 1/8"	1/2, 3/4	Yellow	Plastic	Nickel	Yes	Knockout Adapter	0000000	00000
				T	1	20	7/8", 1 1/8"	1/2, 3/4	Blue	Plastic	Copper	Yes	Knockout Adapter	0000000	00000


				Female Flat-Pin Mini Thermocouple Connectors—800° F Max. Temp.







								Screw-Terminal Wire Connection

								J	1	20	7/8", 1 1/8"	1/2, 3/4	Red	Plastic	Iron	Yes	Knockout Adapter	00000000	00000


								K	1	20	7/8", 1 1/8"	1/2, 3/4	Red	Plastic	Nickel	Yes	Knockout Adapter	00000000	00000
								T	1	20	7/8", 1 1/8"	1/2, 3/4	Red	Plastic	Copper	Yes	Knockout Adapter	00000000	00000


								Female Round-Pin Thermocouple Connectors—400° F Max. Temp.







												Screw-Terminal Wire Connection

												J	1	14	1 1/8"	3/4	Black	Plastic	Iron	Yes	—	0000000	00000


												K	1	14	1 1/8"	3/4	Yellow	Plastic	Nickel	Yes	—	0000000	00000
												T	1	14	1 1/8"	3/4	Blue	Plastic	Copper	Yes	—	0000000	00000


												Female Round-Pin Thermocouple Connectors—800° F Max. Temp.







																Screw-Terminal Wire Connection

																J	1	14	1 1/8"	3/4	Red	Plastic	Iron	Yes	—	00000000	00000


																K	1	14	1 1/8"	3/4	Red	Plastic	Nickel	Yes	—	00000000	00000
T																1	14	1 1/8"	3/4	Red	Plastic	Copper	Yes	—	00000000	00000


Female Round-Pin Thermocouple Connectors—1,000° F Max. Temp.







																Screw-Terminal Wire Connection

																J	1	14	1 1/8"	3/4	White	Ceramic	Iron	Yes	—	00000000	00000


																K	1	14	1 1/8"	3/4	White	Ceramic	Nickel	Yes	—	00000000	00000
																T	1	14	1 1/8"	3/4	White	Ceramic	Copper	Yes	—	00000000	00000

Thermocouple Connectors


Flat-Pin Mini Male Connector	Flat-Pin Mini Female Connector	Round-Pin Male Connector	Round-Pin Female Connector

Simplify connecting your thermocouple to thermometers and control panels—these connectors give your thermocouple a plug-in connection. To attach them to your thermocouple, first remove the panel on these connectors to expose the terminals. Then insert your thermocouple wire leads, tighten the terminals, and reattach the panel.

					Material		Male Connection		Female Connection
	Thermocouple Type	For Max. Wire Ga.	Color	Distance Between Pins	Body	Contact		Each		Each
Flat-Pin Mini Thermocouple Connectors—400° F Max. Temp.







				Screw-Terminal Wire Connection

				B	24	White	0.313"	Plastic	Copper	00000000	00000	00000000	00000


				C	23	Red	0.313"	Plastic	Tungsten	00000000	00000	00000000	00000
				E	24	Purple	0.313"	Plastic	Nickel	00000000	0000	00000000	0000
				J	24	Black	0.313"	Plastic	Iron	0000000	0000	0000000	0000
				K	24	Yellow	0.313"	Plastic	Nickel	0000000	0000	0000000	0000
				N	24	Orange	0.313"	Plastic	Nickel	00000000	0000	00000000	0000
				R	24	Green	0.313"	Plastic	Copper	00000000	0000	00000000	0000
				S	24	Green	0.313"	Plastic	Copper	00000000	0000	00000000	0000
				T	24	Blue	0.313"	Plastic	Copper	0000000	0000	0000000	0000
				U	24	White	0.313"	Plastic	Tungsten	00000000	0000	00000000	0000


				Flat-Pin Mini Thermocouple Connectors—800° F Max. Temp.







								Screw-Terminal Wire Connection

								J	24	Red	0.313"	Plastic	Iron	0000000	0000	0000000	0000


								K	24	Red	0.313"	Plastic	Nickel	0000000	0000	0000000	0000
								T	24	Red	0.313"	Plastic	Copper	0000000	0000	0000000	0000


								Round-Pin Thermocouple Connectors—400° F Max. Temp.







												Screw-Terminal Wire Connection

												B	14	White	0.438"	Plastic	Copper	00000000	0000	00000000	0000


												C	14	Brown	0.438"	Plastic	Tungsten	00000000	00000	00000000	00000
												E	14	Purple	0.438"	Plastic	Nickel	00000000	0000	00000000	0000
												J	14	Black	0.438"	Plastic	Iron	0000000	0000	0000000	0000
												K	14	Yellow	0.438"	Plastic	Nickel	0000000	0000	0000000	0000
												N	14	Orange	0.438"	Plastic	Nickel	00000000	0000	00000000	0000
												R	14	Green	0.438"	Plastic	Copper	00000000	0000	00000000	0000
												S	14	Green	0.438"	Plastic	Copper	00000000	0000	00000000	0000
												T	14	Blue	0.438"	Plastic	Copper	0000000	0000	0000000	0000
												U	14	White	0.438"	Plastic	Tungsten	00000000	0000	00000000	0000


Round-Pin Thermocouple Connectors—800° F Max. Temp.







												Screw-Terminal Wire Connection

												J	14	Red	0.438"	Plastic	Iron	0000000	00000	0000000	00000


												K	14	Red	0.438"	Plastic	Nickel	0000000	00000	0000000	00000
												T	14	Red	0.438"	Plastic	Copper	0000000	00000	0000000	00000

Conduit-Mount Thermocouple Connector Strips


Flat-Pin Strip	Round-Pin Strip

Already mounted in a conduit box, these connector strips save you the effort of modifying a panel for installation. With six connections on each strip, you can plug in multiple thermocouples to monitor temperature at different points in your process. The sockets are numbered to help you identify thermocouples and keep your wires organized.

To install, remove the connector strip from the conduit box, then pull your wiring through. Attach the box to your conduit, wire up the back of the connector strip, and reattach it to the conduit box. Then just plug your thermocouples into the strip.

				Body				Material		Conduit Connection
	Thermocouple Type	No. of Connections	For Max. Wire Ga.	Lg.	Wd.	Ht.	Color	Body	Contact	Pipe Size	Thread Type	Gender		Each
Female Flat-Pin Mini Thermocouple Connectors—400° F Max. Temp.







				Screw-Terminal Wire Connection

				J	6	24	4 9/16"	2 13/16"	2 1/4"	Black	Aluminum	Iron	3/4	NPT	Female	0000000	000000


				K	6	24	4 9/16"	2 13/16"	2 1/4"	Yellow	Aluminum	Nickel	3/4	NPT	Female	0000000	00000


				Female Round-Pin Thermocouple Connectors—400° F Max. Temp.







								Screw-Terminal Wire Connection

								J	6	20	4 9/16"	2 13/16"	2 1/4"	Black	Aluminum	Iron	3/4	NPT	Female	0000000	000000


								K	6	20	4 9/16"	2 13/16"	2 1/4"	Yellow	Aluminum	Nickel	3/4	NPT	Female	0000000	000000

Quick-Wire Thermocouple Connectors


	Male Connector	Female Connector

No need to take these connectors apart to wire them—just insert your wire leads and tighten the terminals to quickly give your thermocouple a plug-in connection. Choose a connector with the same thermocouple type as the thermocouple you’re attaching. You should also make sure the equipment you’re plugging these connectors into is also compatible with the same thermocouple type.

					Material		Male Connection			Female Connection
	Thermocouple Type	For Max. Wire Ga.	Color	Distance Between Pins	Body	Contact	Pin Lg.		Each		Each
Round-Pin Thermocouple Connectors—400° F Max. Temp.







				Screw-Terminal Wire Connection

				J	14	Black	0.438"	Plastic	Iron	9/16"	0000000	00000	0000000	00000


				K	14	Yellow	0.438"	Plastic	Nickel	9/16"	0000000	0000	0000000	0000
				T	14	Blue	0.438"	Plastic	Copper	9/16"	0000000	0000	0000000	0000


				Round-Pin Thermocouple Connectors—800° F Max. Temp.







								Screw-Terminal Wire Connection

								J	14	Red	0.438"	Plastic	Iron	9/16"	0000000	00000	0000000	00000


								K	14	Red	0.438"	Plastic	Nickel	9/16"	0000000	00000	0000000	00000
								T	14	Red	0.438"	Plastic	Copper	9/16"	0000000	00000	0000000	00000


								Round-Pin Thermocouple Connectors—1,000° F Max. Temp.







												Screw-Terminal Wire Connection

												J	14	White	0.442"	Ceramic	Iron	1/2"	0000000	00000	0000000	00000


												K	14	White	0.442"	Ceramic	Nickel	1/2"	0000000	00000	0000000	00000
												T	14	White	0.442"	Ceramic	Copper	1/2"	0000000	00000	0000000	00000

Threaded Thermocouple Connectors


Flat-Pin Connector	Round-Pin Connector

Thread these connectors into a hole for an easy way to plug in a thermocouple. With the wire leads in the back, connect them to controllers, thermometers, and other temperature reading devices.

				Process			Wire Lead		Material
	Thermocouple Type	No. of Connections	Temp. Range, ° F	Pipe Size	Thread Type	Gender	AWG	Lg.	Body	Cable	Cable Lg., ft.	Max. Cable Temp., ° F		Each
Female Flat-Pin Mini Thermocouple Connectors







				Wire Lead Connection

				J	1	-40 to 390	1/2	NPT	Male	24	2"	Stainless Steel	FEP	10	400	0000000	0000000


				K	1	-40 to 390	1/2	NPT	Male	24	2"	Stainless Steel	FEP	10	400	0000000	000000
				T	1	-40 to 390	1/2	NPT	Male	24	2"	Stainless Steel	FEP	10	400	0000000	000000


				Female Round-Pin Thermocouple Connectors







								Wire Lead Connection

								J	1	-40 to 390	3/4	NPT	Male	24	2"	Stainless Steel	FEP	10	400	0000000	000000


								K	1	-40 to 390	3/4	NPT	Male	24	2"	Stainless Steel	FEP	10	400	0000000	000000
								T	1	-40 to 390	3/4	NPT	Male	24	2"	Stainless Steel	FEP	10	400	0000000	000000

Thermocouple Connector Adapters

Convert round-pin thermocouple connectors to flat-pin mini thermocouple connectors.

						Material
	Thermocouple Type	Max. Temp., ° F	Color	Pin Lg.	Distance Between Pins	Body	Contact		Each
Female Round-Pin Thermocouple Connector × Male Flat-Pin Mini Thermocouple Connector



		B	400	White	7/16"	0.438"	Plastic	Platinum	00000000	000000


		C	400	Brown	7/16"	0.438"	Plastic	Tungsten	00000000	00000
		E	400	Purple	7/16"	0.438"	Plastic	Nickel	00000000	00000
		J	400	Black	7/16"	0.438"	Plastic	Iron	0000000	00000
		K	400	Yellow	7/16"	0.438"	Plastic	Nickel	0000000	00000
		N	400	Orange	7/16"	0.438"	Plastic	Nickel	00000000	00000
		R	400	Green	7/16"	0.438"	Plastic	Platinum	00000000	00000
		S	400	Green	7/16"	0.438"	Plastic	Platinum	00000000	00000
		T	400	Blue	7/16"	0.438"	Plastic	Copper	00000000	00000
		U	400	White	7/16"	0.438"	Plastic	Copper	00000000	00000

Thermocouple and RTD Bayonet Adapters

Quickly install or remove thermocouple and RTD probes from your equipment. A pin on these adapters slides into the groove on a bayonet connector to lock it in place.

Threaded Adapters

Threaded adapters mount to a threaded hole in molds, plates, and other surfaces.

	Lg.	Body Material		Each
1/8 NPT Male



	9/32"	7/8"	Stainless Steel	0000000	00000


	9/32"	1 1/4"	Stainless Steel	0000000	0000
	9/32"	1 1/2"	Stainless Steel	0000000	0000
	9/32"	2"	Stainless Steel	0000000	0000
	9/32"	2 1/4"	Stainless Steel	0000000	0000
	9/32"	2 1/2"	Stainless Steel	0000000	0000
	9/32"	3 1/2"	Stainless Steel	0000000	00000


	3/8"-24 UNF Male



			9/32"	7/8"	Stainless Steel	0000000	00000


			9/32"	1 1/2"	Stainless Steel	0000000	00000
			9/32"	1 3/4"	Stainless Steel	0000000	00000
			9/32"	2 1/2"	Stainless Steel	0000000	00000
			9/32"	3 1/2"	Stainless Steel	0000000	00000

Worm-Drive Clamp Adapters

Worm-drive clamp adapters connect to pipe, hose, and tubing.

			Band
Clamp ID Range	For Max. Probe Dia.	Lg.	Wd.	Thk.	Drive Style	Hex Size	Body Material		Each



	1/2" to 7/8"	9/32"	1 3/8"	1/2"	0.023"	Slotted, External Hex	5/16"	Stainless Steel	0000000	000000


	7/8" to 1 1/2"	9/32"	1 3/8"	1/2"	0.023"	Slotted, External Hex	5/16"	Stainless Steel	0000000	00000
	1 5/16" to 2 1/4"	9/32"	1 3/8"	1/2"	0.023"	Slotted, External Hex	5/16"	Stainless Steel	0000000	00000
	2 1/4" to 3 5/16"	9/32"	1 3/8"	1/2"	0.023"	Slotted, External Hex	5/16"	Stainless Steel	0000000	00000
	3 5/16" to 4 1/4"	9/32"	1 3/8"	1/2"	0.023"	Slotted, External Hex	5/16"	Stainless Steel	0000000	00000
	4 5/16" to 5 1/4"	9/32"	1 3/8"	1/2"	0.023"	Slotted, External Hex	5/16"	Stainless Steel	0000000	00000

Thermocouple Connector Covers

Shown with Two

Covers on Mated

Pair of

Connectors

Shield thermocouple connectors from dust and debris. Just slide these neoprene covers over your connector and route the wires through the opening. Use two to fully protect a mated pair of connectors—part of the covers will overlap to form a seal.

	Overall Lg.	Material		Each
For Round-Pin Thermocouple Connector Connection



	-35 to 212	2 3/4"	Neoprene	0000000	00000