The Thermocouple,immersion, cataloged under National Stock Number 6685-01-172-9381, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-172-9381 |
| Item Name | Thermocouple,immersion |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Immersion Length | 6.810 INCHES NOMINAL IN |
| Unit Type | EXPOSED LOOP |
| Operating Temp Range | +0.0 TO 200.0 FAHRENHEIT DEGF |
| Material | COPPER ALLOY AND IRON OVERALL |
| Terminal Type and Quantity | 1 CONNECTOR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| R-TBD-778 | 5/9 Secondary reference The Boeing Company Div Legacy Am&m |
| 294046-1 | 3/2 Design control — primary reference U.S. Government activity |
| 294046-1 | 5/9 Secondary reference Duracap International Incorporated |
NSN 6685-01-172-9381 is a Thermocouple,immersion, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-01-172-9381: Overall Length: 6.4636 INCHES NOMINAL IN; Immersion Length: 6.810 INCHES NOMINAL IN; Unit Type: EXPOSED LOOP; Operating Temp Range: +0.0 TO 200.0 FAHRENHEIT DEGF. 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.