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Standard Size Thermocouple Connectors

Standard Size Thermocouple Connector Most Popular Round Pin TC Connector

C$44.50

Item# OSTW-K-M-S

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 C$44.50
10-49 C$38.72
50-99 C$36.94
100-999 C$34.71
1000-4999 C$32.93
5000+ C$30.71

In stock

Lead Time (If not in stock): 3 weeks
Standard Size Thermocouple Connector Most Popular Round Pin TC Connector OSTW-K-M-S OSTW-K-M-S
  • Universal Female Works with Standard Round Pins or Miniature Flat Pins
  • Quick Connect Contact Washers
  • ANSI or IEC Color Coded
  • Hollow-Pin Construction

OSTW-K-M-S Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Sensing Type
Thermocouple Calibration Type
Temperature Max
Temperature Range
Connector Gender
Calibration Standard
Additional Features
Connector Style
Temperature Unit
Temperature Min
No. of Pins/Sockets


OSTW Series connectors are standard size round pin 2 pole TC connectors. They connect or extend TC wire and cable to thermocouple sensors, temperature instrumentation and process controllers.This popular series of TC connector is available in all thermocouple calibration code colors. The contact washer feature allows the installer to use a straight wire strip. This greatly cuts installation/termination time and eliminates the torque that is normally associated with wire that is looped around a termination screw.
OSTW-( )-F female jack is Universal it will accept standard size round pin or mini size flat pin male TC connector plugs.

Some other designs:
SMPW_SMP_HMP_HMPW">Mini size flat 2 pin TC connector design.
OTP">Round pin 3 pole, 3 prong TC connector shape.
MTP">Flat pin 3 pole, 3 prong TC connector shape.

Examples of pricing for popular models is referenced in the "To Order" box. Use the "Part Number Builder" below to get pricing for all available models.
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Rated 5 out of 5 by from Keep it simple!! Easy and solid wire terminations in the field. Multiple application uses.
Date published: 2021-01-13
Rated 5 out of 5 by from The right stuff! The plug adapters worked great. My biggest challenge was to find a company that produces the proper size I needed. Omega fill the bill, Thanks
Date published: 2019-04-17
Rated 5 out of 5 by from Works great I bought this a little over a month ago, the male and female plugs work perfectly. Easy to attach wires and have rubber fitting to keep moisture out. Would buy again
Date published: 2019-03-25
Rated 5 out of 5 by from Great (Large Body) connectors I really like these connectors, and use them when instrumenting larger equipment for testing. They are large enough to handle easily when connecting Tc's to them.
Date published: 2017-10-31
Rated 5 out of 5 by from These are the Standard connector, no pun intended These are what all the others are trying to be, but aren't.
Date published: 2017-09-16
Rated 5 out of 5 by from Great service Items exactly what my project requirements needed.
Date published: 2016-10-28
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