McMaster-Carr

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	Connection Type Connection Type


Flat Pin	Round Pin

Threaded

	Thermocouple Type Thermocouple Type

	Color Color

	Yellow		Black
	Red		Blue
	White

	Number of Connections Number of Connections

	Connection Gender Connection Gender

Female

Male

	Body Material Body Material

Plastic

Stainless Steel

Ceramic

	Maximum Temperature Maximum Temperature

	Thread Type Thread Type

NPT

UNF

	For Maximum Wire Gauge For Maximum Wire Gauge

	Distance Between Pins Distance Between Pins

0.313"

0.438"

0.442"

	Contact Material Contact Material

Nickel

Iron

Copper

	Overall Length Overall Length

	Length Length

	Pin Length Pin Length

1/2"

9/16"

11/16"

	Connection Gender Connection Gender

Male

Female

	Wire Construction Wire Construction

Solid

Stranded

	Minimum Temperature Minimum Temperature

	Jacket Material Jacket Material

Plastic

Rubber

	Wire Gauge Wire Gauge

	Insulation Material Insulation Material

PVC

PTFE

	Wire Diameter Wire Diameter

0.165"

0.17"

	Process Pipe Size Process Pipe Size

1/2

3/4

	For Panel Cutout Height For Panel Cutout Height

1 1/4"

1 3/4"

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135 Products

Thermocouple Connectors

Flat-Pin Male Connector

Flat-Pin Female Connector

Round-Pin Male Connector

Round-Pin Female Connector

Add these connectors to thermocouple wire for easy attachment to thermometers and control panels.

Connectors with exposed screw terminals let you quickly attach wire leads without disassembling the connectors.

							Material
Thermocouple Type	No. of Connections	For Max. Wire Gauge	Max. Temperature, ° F	Color	Pin Lg.	Distance Between Pins	Body	Contact		Each
Flat-Pin Male Connector
Screw Terminals
J	1	24	400°	Black	1/2"	0.313"	Plastic	Iron	0000000	00000
J	1	24	800°	Red	1/2"	0.313"	Plastic	Iron	0000000	0000
K	1	24	400°	Yellow	1/2"	0.313"	Plastic	Nickel	0000000	0000
K	1	24	800°	Red	1/2"	0.313"	Plastic	Nickel	0000000	0000
T	1	24	400°	Blue	1/2"	0.313"	Plastic	Copper	0000000	0000
T	1	24	800°	Red	1/2"	0.313"	Plastic	Copper	0000000	0000
Flat-Pin Female Connector
Screw Terminals
J	1	24	400°	Black	__	0.313"	Plastic	Iron	0000000	0000
J	1	24	800°	Red	__	0.313"	Plastic	Iron	0000000	0000
K	1	24	400°	Yellow	__	0.313"	Plastic	Nickel	0000000	0000
K	1	24	800°	Red	__	0.313"	Plastic	Nickel	0000000	0000
T	1	24	400°	Blue	__	0.313"	Plastic	Copper	0000000	0000
T	1	24	800°	Red	__	0.313"	Plastic	Copper	0000000	0000
Round-Pin Male Connector
Screw Terminals
J	1	14	400°	Black	9/16"	0.438"	Plastic	Iron	0000000	0000
J	1	14	800°	Red	9/16"	0.438"	Plastic	Iron	0000000	00000
K	1	14	400°	Yellow	9/16"	0.438"	Plastic	Nickel	0000000	0000
K	1	14	800°	Red	9/16"	0.438"	Plastic	Nickel	0000000	00000
T	1	14	400°	Blue	9/16"	0.438"	Plastic	Copper	0000000	0000
T	1	14	800°	Red	9/16"	0.438"	Plastic	Copper	0000000	00000
Exposed Screw Terminals
J	1	14	400°	Black	9/16"	0.438"	Plastic	Iron	0000000	0000
J	1	14	800°	Red	9/16"	0.438"	Plastic	Iron	0000000	00000
J	1	14	1000°	White	1/2"	0.442"	Ceramic	Iron	0000000	0000
K	1	14	400°	Yellow	9/16"	0.438"	Plastic	Nickel	0000000	0000
K	1	14	800°	Red	9/16"	0.438"	Plastic	Nickel	0000000	00000
K	1	14	1000°	White	1/2"	0.442"	Ceramic	Nickel	0000000	0000
T	1	14	400°	Blue	9/16"	0.438"	Plastic	Copper	0000000	0000
T	1	14	800°	Red	9/16"	0.438"	Plastic	Copper	0000000	00000
T	1	14	1000°	White	1/2"	0.442"	Ceramic	Copper	0000000	0000
Round-Pin Female Connector
Screw Terminals
J	1	14	400°	Black	__	0.438"	Plastic	Iron	0000000	0000
J	1	14	800°	Red	__	0.438"	Plastic	Iron	0000000	00000
K	1	14	400°	Yellow	__	0.438"	Plastic	Nickel	0000000	0000
K	1	14	800°	Red	__	0.438"	Plastic	Nickel	0000000	00000
T	1	14	400°	Blue	__	0.438"	Plastic	Copper	0000000	0000
T	1	14	800°	Red	__	0.438"	Plastic	Copper	0000000	00000
Exposed Screw Terminals
J	1	14	400°	Black	__	0.438"	Plastic	Iron	0000000	0000
J	1	14	800°	Red	__	0.438"	Plastic	Iron	0000000	00000
J	1	14	1000°	White	__	0.442"	Ceramic	Iron	0000000	0000
K	1	14	400°	Yellow	__	0.438"	Plastic	Nickel	0000000	0000
K	1	14	800°	Red	__	0.438"	Plastic	Nickel	0000000	00000
K	1	14	1000°	White	__	0.442"	Ceramic	Nickel	0000000	0000
T	1	14	400°	Blue	__	0.438"	Plastic	Copper	0000000	0000
T	1	14	800°	Red	__	0.438"	Plastic	Copper	0000000	00000
T	1	14	1000°	White	__	0.442"	Ceramic	Copper	0000000	0000

Thermocouple Adapters

Convert round-pin male connectors to flat-pin male connectors.

						Material
Thermocouple Type	No. of Connections	Max. Temperature, ° F	Color	Pin Lg.	Distance Between Pins	Body	Contact		Each
Round-Pin Female × Flat-Pin Male Connector
J	2	400°	Black	11/16"	0.442"	Plastic	Iron	0000000	00000
K	2	400°	Yellow	11/16"	0.442"	Plastic	Nickel	0000000	0000

Bayonet-Style Thermocouple Adapters

Attach thermocouple probes with a bayonet connection to a threaded connection.

1/8 NPT Male
Overall Lg.	Body Material		Each
7/8"	Stainless Steel	0000000	00000
1 1/4"	Stainless Steel	0000000	0000
1 1/2"	Stainless Steel	0000000	0000
2"	Stainless Steel	0000000	0000
2 1/4"	Stainless Steel	0000000	0000
2 1/2"	Stainless Steel	0000000	0000
3 1/2"	Stainless Steel	0000000	0000
3/8"-24 UNF Male
7/8"	Stainless Steel	0000000	0000
1 1/2"	Stainless Steel	0000000	00000
1 3/4"	Stainless Steel	0000000	00000
2 1/2"	Stainless Steel	0000000	00000
3 1/2"	Stainless Steel	0000000	00000

Threaded Thermocouple Connectors

Flat-Pin Connector

Round-Pin Connector

Also known as feedthrough connectors, these mount through threaded tank openings to make connections between thermocouple probes and external equipment.

			Process			Wire Lead
Thermocouple Type	No. of Connections	Temperature Range, ° F	Pipe Size	Thread Type	Gender	Gauge	Lg.	Insulation Material	Jacket Material	Body Material		Each
Flat-Pin Female Connector
Screw Terminals
J	1	-40° to 250°	1/2	NPT	Male	24	48"	PTFE	PTFE	Stainless Steel	00000000	000000
K	1	-40° to 250°	1/2	NPT	Male	24	48"	PTFE	PTFE	Stainless Steel	00000000	00000
T	1	-40° to 250°	1/2	NPT	Male	24	48"	PTFE	PTFE	Stainless Steel	00000000	00000
Round-Pin Female Connector
Screw Terminals
J	1	-40° to 250°	3/4	NPT	Male	24	48"	PTFE	PTFE	Stainless Steel	00000000	00000
K	1	-40° to 250°	3/4	NPT	Male	24	48"	PTFE	PTFE	Stainless Steel	00000000	00000
T	1	-40° to 250°	3/4	NPT	Male	24	48"	PTFE	PTFE	Stainless Steel	00000000	00000

Panel-Mount Thermocouple Connectors

Flat-Pin Connector

Round-Pin Connector

Plug thermocouple probes into a control panel.

						Material
Thermocouple Type	No. of Connections	For Max. Wire Gauge	Max. Temperature, ° F	For Panel Cutout Dia.	Color	Body	Contact	Fasteners Included		Each
Flat-Pin Female Connector
Screw Terminals
J	2	20	400°	7/8"	Black	Plastic	Iron	Yes	0000000	000000
K	2	20	400°	7/8"	Yellow	Plastic	Nickel	Yes	0000000	00000
T	2	20	400°	7/8"	Blue	Plastic	Copper	Yes	0000000	00000
Round-Pin Female Connector
Screw Terminals
J	2	14	400°	1 1/8"	Black	Plastic	Iron	Yes	0000000	00000
K	2	14	400°	1 1/8"	Yellow	Plastic	Nickel	Yes	0000000	00000
T	2	14	400°	1 1/8"	Blue	Plastic	Copper	Yes	0000000	00000

Panel-Mount Thermocouple Connection Strips

Flat-Pin Strip

Round-Pin Strip

Connect multiple thermocouple probes to an instrument panel.

				For Panel Cutout			Material
Thermocouple Type	No. of Connections	For Max. Wire Gauge	Max. Temperature, ° F	Wd.	Ht.	Color	Body	Contact	Fasteners Included		Each
Flat-Pin Female Connector
Screw Terminals
J	2	24	400°	1 1/4"	1"	Black	Plastic	Iron	Yes	0000000	000000
J	4	24	400°	2 5/8"	1"	Black	Plastic	Iron	Yes	0000000	00000
J	6	24	400°	4"	1"	Black	Plastic	Iron	Yes	0000000	00000
J	8	24	400°	5 3/8"	1"	Black	Plastic	Iron	Yes	0000000	00000
J, K, T	2	24	400°	1 1/4"	1"	__	Plastic	__	Yes	00000000	00000
J, K, T	4	24	400°	2 5/8"	1"	__	Plastic	__	Yes	00000000	00000
J, K, T	6	24	400°	4"	1"	__	Plastic	__	Yes	00000000	00000
J, K, T	8	24	400°	5 3/8"	1"	__	Plastic	__	Yes	00000000	00000
K	2	24	400°	1 1/4"	1"	Yellow	Plastic	Nickel	Yes	0000000	00000
K	4	24	400°	2 5/8"	1"	Yellow	Plastic	Nickel	Yes	0000000	00000
K	6	24	400°	4"	1"	Yellow	Plastic	Nickel	Yes	0000000	00000
K	8	24	400°	5 3/8"	1"	Yellow	Plastic	Nickel	Yes	0000000	00000
T	2	24	400°	1 1/4"	1"	Blue	Plastic	Copper	Yes	0000000	00000
T	4	24	400°	2 5/8"	1"	Blue	Plastic	Copper	Yes	0000000	00000
T	6	24	400°	4"	1"	Blue	Plastic	Copper	Yes	0000000	00000
T	8	24	400°	5 3/8"	1"	Blue	Plastic	Copper	Yes	0000000	00000
Round-Pin Female Connector
Screw Terminals
J	2	16	400°	1 5/16"	1 1/4"	Black	Plastic	Iron	Yes	0000000	00000
J	4	16	400°	2 13/16"	1 1/4"	Black	Plastic	Iron	Yes	0000000	00000
J	6	16	400°	4 5/16"	1 1/4"	Black	Plastic	Iron	Yes	0000000	00000
J	8	16	400°	5 13/16"	1 1/4"	Black	Plastic	Iron	Yes	0000000	00000
J, K, T	2	16	400°	1 5/16"	1 1/4"	__	Plastic	__	Yes	00000000	00000
J, K, T	4	16	400°	2 13/16"	1 1/4"	__	Plastic	__	Yes	00000000	00000
J, K, T	6	16	400°	4 5/16"	1 1/4"	__	Plastic	__	Yes	00000000	00000
J, K, T	8	16	400°	5 13/16"	1 1/4"	__	Plastic	__	Yes	00000000	00000
K	2	16	400°	1 5/16"	1 1/4"	Yellow	Plastic	Nickel	Yes	0000000	00000
K	4	16	400°	2 13/16"	1 1/4"	Yellow	Plastic	Nickel	Yes	0000000	00000
K	6	16	400°	4 5/16"	1 1/4"	Yellow	Plastic	Nickel	Yes	0000000	00000
K	8	16	400°	5 13/16"	1 1/4"	Yellow	Plastic	Nickel	Yes	0000000	00000
T	2	16	400°	1 5/16"	1 1/4"	Blue	Plastic	Copper	Yes	0000000	00000
T	4	16	400°	2 13/16"	1 1/4"	Blue	Plastic	Copper	Yes	0000000	00000
T	6	16	400°	4 5/16"	1 1/4"	Blue	Plastic	Copper	Yes	0000000	00000
T	8	16	400°	5 13/16"	1 1/4"	Blue	Plastic	Copper	Yes	0000000	00000

Thermocouple Extension Wire with Connectors

Solid Wire with Flat-Pin Male × Female Connector

Solid Wire with Flat-Pin Male × Male Connector

Solid Wire with Round-Pin Male × Female Connector

Stranded Wire with Flat-Pin Male × Female Connector

Stranded Wire with Flat-Pin Male × Male Connector

Extend the reach of your thermocouple probe—plug-in connectors on both ends of this wire speed up installation.

Stranded wire is more flexible than solid wire.

			Wire		Material
Thermocouple Type	Temperature Range, ° F	Lg., ft.	Gauge	Dia.	Insulation	Jacket	Max. Jacket Temperature, ° F		Each
Solid Wire
Flat-Pin Male × Flat-Pin Female Connector
J	-15° to 220°	10	24	0.17"	PVC	PVC	220°	00000000	000000
J	-15° to 220°	25	24	0.17"	PVC	PVC	220°	00000000	00000
J	-15° to 220°	50	24	0.17"	PVC	PVC	220°	00000000	00000
K	-15° to 220°	10	24	0.17"	PVC	PVC	220°	00000000	00000
K	-15° to 220°	25	24	0.17"	PVC	PVC	220°	00000000	00000
K	-15° to 220°	50	24	0.17"	PVC	PVC	220°	00000000	00000
T	-15° to 220°	10	24	0.17"	PVC	PVC	220°	00000000	00000
T	-15° to 220°	25	24	0.17"	PVC	PVC	220°	00000000	00000
T	-15° to 220°	50	24	0.17"	PVC	PVC	220°	00000000	00000
Flat-Pin Male × Flat-Pin Male Connector
J	-15° to 220°	10	24	0.17"	PVC	PVC	220°	0000000	00000
J	-15° to 220°	25	24	0.17"	PVC	PVC	220°	0000000	00000
J	-15° to 220°	50	24	0.17"	PVC	PVC	220°	0000000	00000
K	-15° to 220°	10	24	0.17"	PVC	PVC	220°	0000000	00000
K	-15° to 220°	25	24	0.17"	PVC	PVC	220°	0000000	00000
K	-15° to 220°	50	24	0.17"	PVC	PVC	220°	0000000	00000
T	-15° to 220°	10	24	0.17"	PVC	PVC	220°	0000000	00000
T	-15° to 220°	25	24	0.17"	PVC	PVC	220°	0000000	00000
T	-15° to 220°	50	24	0.17"	PVC	PVC	220°	0000000	00000
Round-Pin Male × Round-Pin Female Connector
J	-15° to 220°	10	24	0.17"	PVC	PVC	220°	00000000	00000
J	-15° to 220°	25	24	0.17"	PVC	PVC	220°	00000000	00000
J	-15° to 220°	50	24	0.17"	PVC	PVC	220°	00000000	00000
K	-15° to 220°	10	24	0.17"	PVC	PVC	220°	00000000	00000
K	-15° to 220°	25	24	0.17"	PVC	PVC	220°	00000000	00000
K	-15° to 220°	50	24	0.17"	PVC	PVC	220°	00000000	00000
T	-15° to 220°	10	24	0.17"	PVC	PVC	220°	00000000	00000
T	-15° to 220°	25	24	0.17"	PVC	PVC	220°	00000000	00000
T	-15° to 220°	50	24	0.17"	PVC	PVC	220°	00000000	00000
Stranded Wire
Flat-Pin Male × Flat-Pin Female Connector
J	-30° to 220°	5	28	0.165"	PTFE	Polyurethane	220°	00000000	00000
K	-30° to 220°	5	28	0.165"	PTFE	Polyurethane	220°	00000000	00000
T	-30° to 220°	5	28	0.165"	PTFE	Polyurethane	220°	00000000	00000
Flat-Pin Male × Flat-Pin Male Connector
J	-30° to 220°	5	28	0.165"	PTFE	Polyurethane	220°	0000000	00000
K	-30° to 220°	5	28	0.165"	PTFE	Polyurethane	220°	0000000	00000
T	-30° to 220°	5	28	0.165"	PTFE	Polyurethane	220°	0000000	00000

Thermocouple Signal Converters

Convert thermocouple probe signals to a 4-20 mA signal for use with switches and controllers.

Panel Mount

		For Panel Cutout
Temp. Range, °F	DIN Trade Size	Ht.	Wd.	Ht.	Wd.	Dp.	AC Voltage (Phase)	Frequency, Hz	Housing Material	Display	Resolution	For Max. Wire Gauge		Each
For Probe Type J
-238° to 1400°	1/8	1 3/4"	3 5/8"	1 7/8"	3 7/8"	6 1/16"	120, 240 (Single)	60	Aluminum	LCD	1	26	00000000	0000000
For Probe Type K
-58° to 1999°	1/8	1 3/4"	3 5/8"	1 7/8"	3 7/8"	6 1/16"	120, 240 (Single)	60	Aluminum	LCD	1	26	00000000	000000

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