PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C668501-0110Thermocouple Assembly

Textron Aviation Inc · NSN 6685-00-884-9916 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-884-9916 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-884-9916. Primary manufacturer part number: C668501-0110.
Features
  • Thermocouple Assembly — FSC 6685
  • General Characteristics Item Description: IMMERSION,CHROMEL CONSTANTAN,24WIRE GAGE SIZE,PROTECTIVE TUBE,STAINLESS STEEL,CEREMIC SHIELD,0.085 IN. DIA OF IMMERSION TUBE,1.56 IN. O/A LG0.75 IMMERSION LG,9.44 IN. LEAD LG,STAINLESS STEEL BRAID,CLAMP MTG,2 STUDS W/LOCK NUTS IN
  • 5 verified cross-references
  • Primary manufacturer: Textron Aviation Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Thermocouple Assembly, cataloged under National Stock Number 6685-00-884-9916, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Textron Aviation Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-884-9916
Primary Part NumberC668501-0110
Item NameThermocouple Assembly
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerTextron Aviation Inc
StatusCANCELLED
General Characteristics Item DescriptionIMMERSION,CHROMEL CONSTANTAN,24WIRE GAGE SIZE,PROTECTIVE TUBE,STAINLESS STEEL,CEREMIC SHIELD,0.085 IN. DIA OF IMMERSION TUBE,1.56 IN. O/A LG0.75 IMMERSION LG,9.44 IN. LEAD LG,STAINLESS STEEL BRAID,CLAMP MTG,2 STUDS W/LOCK NUTS IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5315-00-286-4907B2189 INTERCHANGEABLE
Pin,shoulder,headless
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
5975-01-386-8563 INTERCHANGEABLE
Junction Box
Cross-Reference Index
Part NumberManufacturer
C668501-0110 Cessna Aircraft Company Dba Textron Aviation (USA)
C668501-0110 PRIMARY Textron Aviation Inc (USA)
86156 Alcor Petroleum Instruments Inc (USA)
MCI106A44 Alcor Aviation Inc Avtec Div (USA)
86156 Petroleum Analyzer Co L.p (USA)
Related Parts
5315-00-286-4907INTERCHANGEABLE
PIN,SHOULDER,HEADLESS
B2189
5975-01-386-8563INTERCHANGEABLE
JUNCTION BOX

Frequently Asked Questions

What is NSN 6685-00-884-9916?

NSN 6685-00-884-9916 is a Thermocouple Assembly, manufactured by Textron Aviation Inc, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-884-9916?

NSN 6685-00-884-9916 has 5 cross-referenced part numbers: C668501-0110 (Cessna Aircraft Company Dba Textron Aviation), C668501-0110 (Textron Aviation Inc), 86156 (Alcor Petroleum Instruments Inc), MCI106A44 (Alcor Aviation Inc Avtec Div), 86156 (Petroleum Analyzer Co L.p).

What NSN replaces 6685-00-884-9916?

There are 2 known substitutes for 6685-00-884-9916: 5315-00-286-4907, 5975-01-386-8563. Verify interchangeability with system specifications before substitution.

What are the specifications of C668501-0110?

Key specifications for C668501-0110: General Characteristics Item Description: IMMERSION,CHROMEL CONSTANTAN,24WIRE GAGE SIZE,PROTECTIVE TUBE,STAINLESS STEEL,CEREMIC SHIELD,0.085 IN. DIA OF IMMERSION TUBE,1.56 IN. O/A LG0.75 IMMERSION LG,9.44 IN. LEAD LG,STAINLESS STEEL BRAID,CLAMP MTG,2 STUDS W/LOCK NUTS IN. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-884-9916 still in active supply?

NSN 6685-00-884-9916 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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