PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-T-24388Thermocouple Assembly

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6685-01-212-8046 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-212-8046 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-212-8046. Primary manufacturer part number: MIL-T-24388.
Features
  • Thermocouple Assembly — FSC 6685
  • General Characteristics Item Description: PLATINUM TEMPERATURE ELEMENT; 9 IN. SHEATH END TO TOP OF HEAD EXTENSION; 2 IN. INSERTION LENGTH; THERMOWELL INSTALLATION IN
  • Precious Material and Weight: 0.040 PLATINUM GRAINS, TROY
  • Precious Material: PLATINUM
  • Precious Material and Location: TEMPERATURE ELEMENT PLATINUM
  • 6 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Thermocouple Assembly, cataloged under National Stock Number 6685-01-212-8046, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-212-8046
Primary Part NumberMIL-T-24388
Item NameThermocouple Assembly
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
General Characteristics Item DescriptionPLATINUM TEMPERATURE ELEMENT; 9 IN. SHEATH END TO TOP OF HEAD EXTENSION; 2 IN. INSERTION LENGTH; THERMOWELL INSTALLATION IN
Precious Material and Weight0.040 PLATINUM GRAINS, TROY
Precious MaterialPLATINUM
Precious Material and LocationTEMPERATURE ELEMENT PLATINUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6685-00-574-8877 INTERCHANGEABLE
Thermocouple Assembly
6685-01-064-5525 INTERCHANGEABLE
Thermocouple Assembly
6685-01-077-5259 INTERCHANGEABLE
Sensor,ambient Temperature
6685-01-119-5560 INTERCHANGEABLE
Transmitter,temperature,electric
6685-01-148-9914 INTERCHANGEABLE
Pyrometer,recording
6685-01-152-4156 INTERCHANGEABLE
Thermocouple,immersion
6685-01-336-5072 INTERCHANGEABLE
Thermocouple,heating Element
6685-01-354-4433 INTERCHANGEABLE
Thermocouple,immersion
6685-01-368-7059 INTERCHANGEABLE
Thermocouple,immersion
6685-01-393-9024 INTERCHANGEABLE
Thermocouple,immersion
Cross-Reference Index
Part NumberManufacturer
MIL-T-24388 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-T-24388/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
PRT-TW-9 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
104YT9 Rosemount Aerospace Inc. Dba Rosemount Aerospace Division Div Utas (USA)
RTE-P-9-2TW Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
104YT-9 Rosemount Inc Dba Fisher Rosemount Service and Support (USA)
Related Parts
6685-00-574-8877INTERCHANGEABLE
THERMOCOUPLE ASSEMBLY
6685-01-064-5525INTERCHANGEABLE
THERMOCOUPLE ASSEMBLY
6685-01-077-5259INTERCHANGEABLE
SENSOR,AMBIENT TEMPERATURE
6685-01-119-5560INTERCHANGEABLE
TRANSMITTER,TEMPERATURE,ELECTRIC
6685-01-148-9914INTERCHANGEABLE
PYROMETER,RECORDING
6685-01-152-4156INTERCHANGEABLE
THERMOCOUPLE,IMMERSION
6685-01-336-5072INTERCHANGEABLE
THERMOCOUPLE,HEATING ELEMENT
6685-01-354-4433INTERCHANGEABLE
THERMOCOUPLE,IMMERSION
6685-01-368-7059INTERCHANGEABLE
THERMOCOUPLE,IMMERSION
6685-01-393-9024INTERCHANGEABLE
THERMOCOUPLE,IMMERSION
6685-01-393-9027INTERCHANGEABLE
THERMOCOUPLE,IMMERSION
6685-01-431-1454INTERCHANGEABLE
THERMOCOUPLE ASSEMBLY

Frequently Asked Questions

What is NSN 6685-01-212-8046?

NSN 6685-01-212-8046 is a Thermocouple Assembly, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-212-8046?

NSN 6685-01-212-8046 has 6 cross-referenced part numbers: MIL-T-24388 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-T-24388/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), PRT-TW-9 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 104YT9 (Rosemount Aerospace Inc. Dba Rosemount Aerospace Division Div Utas), RTE-P-9-2TW (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 6685-01-212-8046?

There are 12 known substitutes for 6685-01-212-8046: 6685-00-574-8877, 6685-01-064-5525, 6685-01-077-5259 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-T-24388?

Key specifications for MIL-T-24388: General Characteristics Item Description: PLATINUM TEMPERATURE ELEMENT; 9 IN. SHEATH END TO TOP OF HEAD EXTENSION; 2 IN. INSERTION LENGTH; THERMOWELL INSTALLATION IN; Precious Material and Weight: 0.040 PLATINUM GRAINS, TROY; Precious Material: PLATINUM; Precious Material and Location: TEMPERATURE ELEMENT PLATINUM. 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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