The Thermocouple,immersion, cataloged under National Stock Number 6685-00-673-9479, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-673-9479 |
| Primary Part Number | PWA8503 |
| Item Name | Thermocouple,immersion |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Accommodated Wire Awg Size | 20 |
| Immersion Length | 1.000 INCHES NOMINAL IN |
| Unit Type | PROTECTIVE TUBE |
| Material | CERAMIC INDIVIDUAL WIRE INSULATION |
| Terminal Type and Quantity | 2 CONNECTOR, PLUG |
| 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 |
|---|---|
| PWA8503 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 5Y0231P1 | 5/9 Secondary reference U.S. Government activity |
| J316G304FX1/8 1IN-P | 3/2 Design control — primary reference U.S. Government activity |
| TF31982 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6685-00-673-9479 is a Thermocouple,immersion, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-673-9479 has 1 manufacturer part number on file: PWA8503 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for PWA8503: Overall Length: 3.000 INCHES NOMINAL IN; Accommodated Wire Awg Size: 20; Immersion Length: 1.000 INCHES NOMINAL IN; Unit Type: PROTECTIVE TUBE. 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.