The Thermocouple,immersion, cataloged under National Stock Number 6685-01-347-2858, 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 4 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-347-2858 |
| Item Name | Thermocouple,immersion |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Immersion Length | 5.030 INCHES MINIMUM AND 5.070 INCHES MAXIMUM IN |
| Unit Type | BAYONET |
| Material | NICKEL ALLOY OVERALL |
| Terminal Type and Quantity | 2 STUD |
| 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 |
|---|---|
| 3094705-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6685-01-347-2858 is a Thermocouple,immersion, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-01-347-2858: Overall Length: 6.080 INCHES MINIMUM AND 6.120 INCHES MAXIMUM IN; Immersion Length: 5.030 INCHES MINIMUM AND 5.070 INCHES MAXIMUM IN; Unit Type: BAYONET; Special Features: AMBIENT TEMPERATURE OPERATING RANGES -65 DEG F TO 300 DEG F;100 DEG F TO 510 DEG F;500 DEG F TO 1425 DEG F CONTINUOUS;800 DEG F 2 SEC MAX TRANSIENT;SPECIFIED MEAN TIME BETWEEN FAILURE OF 76 HOURS;EXHAUST GAS THERMOCOUPLE FFR DEGF. 4 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.