The Thermostat,flow Control, cataloged under National Stock Number 6685-01-683-4789, 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 Caterpillar Inc Div Caterpillar Defense. Government technical data includes 3 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-683-4789 |
| Primary Part Number | 378-8437 |
| Item Name | Thermostat,flow Control |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Flow Control Device | ANY ACCEPTABLE |
| Operating Temp Rating | 120.0 FAHRENHEIT NOMINAL DEGF |
| Thermostat Type | ANY ACCEPTABLE |
| 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 |
|---|---|
| 378-8437 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 6685-01-683-4789 is a Thermostat,flow Control, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-683-4789 has 1 manufacturer part number on file: 378-8437 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 378-8437: Flow Control Device: ANY ACCEPTABLE; Operating Temp Rating: 120.0 FAHRENHEIT NOMINAL DEGF; Thermostat Type: ANY ACCEPTABLE; Part Name Assigned by Controlling Agency: THERMOSTAT ASSEMBLY (JACKET WATER HEATER). 3 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.