The Thermocouple,immersion, cataloged under National Stock Number 6685-00-487-9944, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Ge Aviation Systems Llc Dba Ge Aviation Systems Llc. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-487-9944 |
| Primary Part Number | R741-66006-00-409 |
| Item Name | Thermocouple,immersion |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Ge Aviation Systems Llc Dba Ge Aviation Systems Llc |
| Status | ACTIVE |
| Precious Material | PLATINUM |
| Precious Material and Weight | 0.040 PLATINUM GRAINS, TROY |
| Unit Type | PROTECTIVE TUBE |
| Precious Material and Location | BULB PLATINUM |
| Material | STEEL CORROSION RESISTING PROTECTIVE TUBE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| RA10-3P5-425-M1-6-SS-254 | Barber-Colman Co Industrial Instruments Div (USA) |
| R741-66006-00-409 PRIMARY | Ge Aviation Systems Llc Dba Ge Aviation Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| A2683 | 5/1 Secondary reference Ge Aviation Systems Llc Dba Ge Aviation Systems Llc |
NSN 6685-00-487-9944 is a Thermocouple,immersion, manufactured by Ge Aviation Systems Llc Dba Ge Aviation Systems Llc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-487-9944 has 2 manufacturer part numbers on file: RA10-3P5-425-M1-6-SS-254 (Barber-Colman Co Industrial Instruments Div), R741-66006-00-409 (Ge Aviation Systems Llc Dba Ge Aviation Systems Llc).
1 possible match (shared part number, not a government interchangeability claim): 3110-00-679-9277. Verify interchangeability with system specifications before substitution.
Key specifications for R741-66006-00-409: Precious Material: PLATINUM; Precious Material and Weight: 0.040 PLATINUM GRAINS, TROY; Unit Type: PROTECTIVE TUBE; Precious Material and Location: BULB PLATINUM. 5 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.