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OSTW-HST-OSTW
Standard Size Thermocouple Connectors
Models In Stock
- Female connectors work with standard size round pin or miniature flat pin male connectors
- Quick connect contact washers and captive cover screws
- OSTW and HSTW styles include write-on window
- OST/OSTW rated -29 to 180°C (-20 to 356°F) and HST/HSTW rated -29 to 260°C (-20 to 500°F)
OSTW-HST-OSTW
From
$
6.19
Models In Stock
Product Overview
- Connection Style Standard Thermocouple Connector
- Number of Pins Sockets 2
- Operating Temperature, Min -29 °C
- Series ID OSTW-HST-OSTW
- Wire Type Solid, Stranded
Supported Applications
The Omega Standard Size Thermocouple Connectors (Series OSTW/HST) provide a universal female "Fits All" design for thermocouples, accepting both standard and miniature sized male pins. These connectors feature hollow-pin construction with tapered point contacts compatible with stranded or solid wire up to 14 AWG.
Models are color-coded per ANSI standards (or IEC) to match specific alloy types including K, T, J, E, R/S, C, U, and N. The series supports uncompensated Type U connectors for use with Type B thermocouples (Pt/6%Rh-Pt/30%Rh).
Operating Conditions & Performance
The series is offered in two housing materials to accommodate different ambient temperature requirements:
- Glass-Filled Nylon (OSTW): -29 to 180°C (-20 to 356°F). Minor discoloration may occur between 150°C (302°F) and 180°C (356°F), though electrical properties are not affected.
- Liquid Crystal Polymer (HSTW): -29 to 260°C (-20 to 500°F).
The connectors utilize compensating alloys specific to the thermocouple type, such as CHROMEGA® / ALOMEGA® for Type K and Copper / Constantan for Type T. The universal female design ensures compatibility with male pins of varying diameters within standard ranges.
Configuration Options
The series supports a broad configuration envelope defined by alloy code, compensating material, ANSI color coding, housing material, and gender (male or female). Key configurable dimensions include:
- Housing Material: Glass-Filled Nylon (OSTW) or Liquid Crystal Polymer (HSTW).
- Gender & Contact Type: Female connectors are standard; solid pin male connectors are available by adding the suffix '-S' to the model number.
- Alloy Codes: K, T, J, E, R/S, C, U, N (including OMEGA-P® / OMEGA-N® for Type N).
- Color Coding: ANSI color codes are standard; IEC options may be available.
Additional features and accessories include captive cover screws with combination Phillips/Slot drive, an internal wire divider, a removable/reversible write-on window (WCP-L), quick connect contact washers (CW-OST series), silicon strain relief grommets (SR-OST series), transmitters, and ferrite cores for EMI protection.
Key Product Differences
The primary distinction within the series is the housing material temperature rating. OSTW models are limited to 180°C (-20 to 356°F) ambient conditions, while HSTW models extend this range to 260°C (-20 to 500°F). Solid pin male connectors (suffix '-S') differ from the standard hollow-pin female design and may incur additional cost. Type C connectors are available as solid pin only in certain configurations.
Model numbers follow the format: OSTW/HST - <Alloy Code> - <Compensating Alloy> - <ANSI Color Code> - <Material> - <Gender>. For example, OSTW-K-M denotes a Glass-Filled Nylon Type K connector with male gender.
PDFs & Manuals
Show Ratings & Reviews
Rated 5 out of
5
by
Jerry from
Thermocouple plugs
I would not have bothered to review these, but I have been buying only this brand for years. We like the terminal connection inside, but what I like best is the cord securing segment. It is cut away inside the body so it actually secures the wire when the 2 halves are screwed together. We actually use these for low voltage plugs vs thermocouple connections, using an 18 ga 2 wire sjoow cable. Simple, cheap, rugged.
Date published: 2016-10-07
Rated 4 out of
5
by
Union Tool from
preforms as expected
used a a thermocouple quick connect preforms as expected
Date published: 2021-04-22
Rated 5 out of
5
by
DCS Corp from
Great Features
delivered on time. worked well on what we needed for our project.
Date published: 2018-10-19
Rated 4 out of
5
by
Bob Z from
Good connectors
Good TC connectors gets the job done no complaints etc
Date published: 2025-12-04
Rated 4 out of
5
by
Bob Z from
good connector
Good TC connector gets the job done no complaints etc
Date published: 2025-12-04
Rated 5 out of
5
by
Anonymous from
Thermocouple Connectors
Your company did a great job locating the parts we needed, and ordering was fast and easy!
Date published: 2025-09-05
Rated 5 out of
5
by
MikeTheBuyer from
As easy as plug it in.
Great Quality, Great Products. I will continue to buy these!
Date published: 2025-08-04
Rated 5 out of
5
by
Darrell from
Thermocouple connectors
The components were delivered in a reasonable amount of time and perform as expected. I would purchase again in the future. I have purchased several hundred of these. I am a frequent customer of Omega and am pleased with the performance and quality of their components.
Date published: 2025-05-29
Good Afternoon, looking for these two panel jacks OSTW-C-M "Tungsten" also OSTW-B-M " Platium " can't find them on your web page, availability and pricing.
Thank you for your inquiry. Unfortunately, OSTW-C-M is not available at the moment. Please use Item# HSTW-C-M as an alternative. The part number for type B connector will be Item# OSTW-U-M.
Date published: 2025-05-14