The Thermocouple,immersion, cataloged under National Stock Number 6685-00-078-3544, 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 Rolls-Royce Corporation. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-078-3544 |
| Primary Part Number | 6850132 |
| Item Name | Thermocouple,immersion |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 PLATE |
| Plate Length | 2.300 INCHES NOMINAL IN |
| Plate Width | 0.937 INCHES NOMINAL IN |
| Accommodated Wire Awg Size | 18 |
| Immersion Length | 1.920 INCHES NOMINAL IN |
| Unit Type | PROTECTIVE TUBE |
| Material | MAGNESIUM ALLOY INDIVIDUAL WIRE INSULATION |
| Terminal Type and Quantity | 4 STUD |
| 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 |
|---|---|
| 6850132 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6685PL0908851 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 6850132 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 6685-00-078-3544 is a Thermocouple,immersion, manufactured by Rolls-Royce Corporation, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-078-3544 has 1 manufacturer part number on file: 6850132 (Rolls-Royce Corporation).
Key specifications for 6850132: Mounting Facility Type and Quantity: 1 PLATE; Plate Length: 2.300 INCHES NOMINAL IN; Plate Width: 0.937 INCHES NOMINAL IN; Overall Length: 3.062 INCHES NOMINAL IN. 8 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.