PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

155A37-1Thermocouple,immersion

Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution · NSN 6685-00-727-2165 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-727-2165 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-727-2165. Primary manufacturer part number: 155A37-1.
Features
  • Thermocouple,immersion — FSC 6685
  • Accommodated Wire Awg Size: 16
  • Operating Temp Range: -54.0 TO 820.0 CELSIUS DEGC
  • Unit Type: PROTECTIVE TUBE
  • Plate Width: 1.078 INCHES NOMINAL IN
  • Plate Length: 2.000 INCHES NOMINAL IN
  • Immersion Length: 1.109 INCHES NOMINAL IN
  • Terminal Type and Quantity: 2 THREADED STUD
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Thermocouple,immersion, cataloged under National Stock Number 6685-00-727-2165, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-727-2165
Primary Part Number155A37-1
Item NameThermocouple,immersion
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerEaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution
StatusCANCELLED
Accommodated Wire Awg Size16
Operating Temp Range-54.0 TO 820.0 CELSIUS DEGC
Unit TypePROTECTIVE TUBE
Plate Width1.078 INCHES NOMINAL IN
Plate Length2.000 INCHES NOMINAL IN
Immersion Length1.109 INCHES NOMINAL IN
Terminal Type and Quantity2 THREADED STUD
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5305-00-054-9263 INTERCHANGEABLE
Setscrew
5331-00-250-0224MS29513-020 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5330-00-876-2306 INTERCHANGEABLE
Packing with Retainer
5999-01-078-6830ST5M1488-3S INTERCHANGEABLE
Contact Kit,electrical
The Boeing Company Div Defense
3110-01-296-0239700-138 INTERCHANGEABLE
Bearing,roller,needle
W a Whitney Co Dba Whitney
Cross-Reference Index
Part NumberManufacturer
700138 Teledyne Brown Engineering, Inc. Dba Teledyne Turbine Engines Div Teledyne Turbine Engines (USA)
700138 Sabreliner Corp (USA)
155A37-1 PRIMARY Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution (USA)
Related Parts
5305-00-054-9263INTERCHANGEABLE
SETSCREW
5331-00-250-0224INTERCHANGEABLE
O-RING
MS29513-020
5330-00-876-2306INTERCHANGEABLE
PACKING WITH RETAINER
5999-01-078-6830INTERCHANGEABLE
CONTACT KIT,ELECTRICAL
ST5M1488-3S
3110-01-296-0239INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
700-138

Frequently Asked Questions

What is NSN 6685-00-727-2165?

NSN 6685-00-727-2165 is a Thermocouple,immersion, manufactured by Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-727-2165?

NSN 6685-00-727-2165 has 3 cross-referenced part numbers: 700138 (Teledyne Brown Engineering, Inc. Dba Teledyne Turbine Engines Div Teledyne Turbine Engines), 700138 (Sabreliner Corp), 155A37-1 (Eaton Aerospace Llc Dba Eaton Inoac Div Fluid & Electrical Distribution).

What NSN replaces 6685-00-727-2165?

There are 5 known substitutes for 6685-00-727-2165: 5305-00-054-9263, 5331-00-250-0224, 5330-00-876-2306 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 155A37-1?

Key specifications for 155A37-1: Accommodated Wire Awg Size: 16; Operating Temp Range: -54.0 TO 820.0 CELSIUS DEGC; Unit Type: PROTECTIVE TUBE; Plate Width: 1.078 INCHES NOMINAL IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-727-2165 still in active supply?

NSN 6685-00-727-2165 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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