PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31109Tester,pyrometer and Thermocoupl

Thermo Electric Company Inc. Dba Thermo Electric Company · NSN 6685-01-010-0243 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-010-0243 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-010-0243. Primary manufacturer part number: 31109.
Features
  • Tester,pyrometer and Thermocoupl — FSC 6685
  • 1 verified cross-reference
  • Primary manufacturer: Thermo Electric Company Inc. Dba Thermo Electric Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Tester,pyrometer and Thermocoupl, cataloged under National Stock Number 6685-01-010-0243, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Thermo Electric Company Inc. Dba Thermo Electric Company. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-010-0243
Primary Part Number31109
Item NameTester,pyrometer and Thermocoupl
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerThermo Electric Company Inc. Dba Thermo Electric Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5136-00-239-2775401102 INTERCHANGEABLE
Die,thread Cutting
Greenfield Industries Inc
4730-00-277-8643SAE J512 4-4 040202B INTERCHANGEABLE
Elbow,pipe to Tube
Sae International Dba Sae International
5360-00-314-719523239 INTERCHANGEABLE
Spring,helical,compression
Leslie Controls, Inc. Dba Leslie Controls Inc
5330-00-316-4205 INTERCHANGEABLE
Gasket
4130-01-235-909631109 INTERCHANGEABLE
Filter Element,air Conditioning
Regal-Beloit Corporation Dba Fasco Group Div Cassville Division
3020-01-413-892331109 INTERCHANGEABLE
Gear,spur
Belfort Instrument Company
4130-01-425-217231109 INTERCHANGEABLE
Filter Element,air Conditioning
Nidec-Torin Corp
2590-01-431-132131109 INTERCHANGEABLE
Cap,filler Opening
Gates Corporation
5315-01-433-331131109 INTERCHANGEABLE
Pin,straight,headless
Woodward, Inc.
4320-01-443-3093 INTERCHANGEABLE
Impeller,pump,centrifugal
Cross-Reference Index
Part NumberManufacturer
31109 PRIMARY Thermo Electric Company Inc. Dba Thermo Electric Company (USA)
Related Parts
5136-00-239-2775INTERCHANGEABLE
DIE,THREAD CUTTING
401102
4730-00-277-8643INTERCHANGEABLE
ELBOW,PIPE TO TUBE
SAE J512 4-4 040202B
5360-00-314-7195INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
23239
5330-00-316-4205INTERCHANGEABLE
GASKET
4130-01-235-9096INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
31109
3020-01-413-8923INTERCHANGEABLE
GEAR,SPUR
31109
4130-01-425-2172INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
31109
2590-01-431-1321INTERCHANGEABLE
CAP,FILLER OPENING
31109
5315-01-433-3311INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
31109
4320-01-443-3093INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
5999-01-632-0884INTERCHANGEABLE
CONTACT,ELECTRICAL
AT62-201-16141

Frequently Asked Questions

What is NSN 6685-01-010-0243?

NSN 6685-01-010-0243 is a Tester,pyrometer and Thermocoupl, manufactured by Thermo Electric Company Inc. Dba Thermo Electric Company, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-010-0243?

NSN 6685-01-010-0243 has 1 cross-referenced part number: 31109 (Thermo Electric Company Inc. Dba Thermo Electric Company).

What NSN replaces 6685-01-010-0243?

There are 11 known substitutes for 6685-01-010-0243: 5136-00-239-2775, 4730-00-277-8643, 5360-00-314-7195 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 31109?

Key specifications for 31109: Special Features: SCALE P/N7551-20 WITH CASE; Overall Height: 6.250 INCHES NOMINAL IN; Overall Length: 4.375 INCHES NOMINAL IN; Overall Width: 5.563 INCHES NOMINAL IN. 4 total characteristics are documented in the Federal Logistics Information System.

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