PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21B-10-B-H-24-B-4Thermocouple,immersion

Rdf Corporation · NSN 6685-01-378-6695 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-378-6695 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-378-6695. Primary manufacturer part number: 21B-10-B-H-24-B-4.
Features
  • Thermocouple,immersion — FSC 6685
  • Material: STEEL CORROSION RESISTING OUTER JACKET INSULATION/SHEATHING
  • 2 verified cross-references
  • Primary manufacturer: Rdf Corporation
Applications
  • Applications requiring Steel Corrosion Resisting Outer Jacket Insulation/sheathing construction
General Description

The Thermocouple,immersion, cataloged under National Stock Number 6685-01-378-6695, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Rdf Corporation. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-378-6695
Primary Part Number21B-10-B-H-24-B-4
Item NameThermocouple,immersion
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerRdf Corporation
StatusACTIVE
MaterialSTEEL CORROSION RESISTING OUTER JACKET INSULATION/SHEATHING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5998-00-234-18162156-2 INTERCHANGEABLE
Circuit Card Assembly
Mission Systems Davenport Inc.
4820-01-096-3197 INTERCHANGEABLE
Seat,valve
3455-01-179-366550-10349 INTERCHANGEABLE
Reamer,machine
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
6625-01-686-356321562 INTERCHANGEABLE
Lead,test
Faro Technologies Inc
Cross-Reference Index
Part NumberManufacturer
21562 Rdf Corporation (USA)
21B-10-B-H-24-B-4 PRIMARY Rdf Corporation (USA)
Related Parts
5998-00-234-1816INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
2156-2
4820-01-096-3197INTERCHANGEABLE
SEAT,VALVE
3455-01-179-3665INTERCHANGEABLE
REAMER,MACHINE
50-10349
6625-01-686-3563INTERCHANGEABLE
LEAD,TEST
21562

Frequently Asked Questions

What is NSN 6685-01-378-6695?

NSN 6685-01-378-6695 is a Thermocouple,immersion, manufactured by Rdf Corporation, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-378-6695?

NSN 6685-01-378-6695 has 2 cross-referenced part numbers: 21562 (Rdf Corporation), 21B-10-B-H-24-B-4 (Rdf Corporation).

What NSN replaces 6685-01-378-6695?

There are 4 known substitutes for 6685-01-378-6695: 5998-00-234-1816, 4820-01-096-3197, 3455-01-179-3665 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21B-10-B-H-24-B-4?

Key specifications for 21B-10-B-H-24-B-4: Material: STEEL CORROSION RESISTING OUTER JACKET INSULATION/SHEATHING. 1 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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