The Thermostat,flow Control, cataloged under National Stock Number 6685-00-997-6372, 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 Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 6685-00-997-6372 |
| Primary Part Number | 20588200 |
| Item Name | Thermostat,flow Control |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| Flow Control Device | BY-PASS |
| Spring Operated Pressure Relief | NOT PROVIDED |
| Largest Outside Diameter | 2.125 INCHES NOMINAL IN |
| Mounting Method | FLANGE |
| Valve Travel Distance | 0.260 INCHES NOMINAL IN |
| Operating Temp Rating | 162.0 FAHRENHEIT NOMINAL DEGF |
| Thermostat Type | PELLET |
| Usage Design | CONTROL EGNINE COOLANT TEMP |
| Opening Temp Rating | 155.0 FAHRENHEIT NOMINAL DEGF |
| 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 |
|---|---|
| 20588200 PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 205882B | 5/9 Secondary reference Hercules Engine Co Inc |
| 205882B | 5/9 Secondary reference Brinkley Technology Group Llc Dba Hercules Manufacturing |
NSN 6685-00-997-6372 is a Thermostat,flow Control, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-997-6372 has 1 manufacturer part number on file: 20588200 (Brinkley Technology Group Llc Dba Hercules Manufacturing).
Key specifications for 20588200: Flow Control Device: BY-PASS; Overall Height: 1.562 INCHES NOMINAL IN; Spring Operated Pressure Relief: NOT PROVIDED; Largest Outside Diameter: 2.125 INCHES NOMINAL IN. 9 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.