The Thermostat,flow Control, cataloged under National Stock Number 6685-00-305-7490, 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 Honeywell International Inc. Div Aerospace - Torrance. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-305-7490 |
| Primary Part Number | 107658-4 |
| Item Name | Thermostat,flow Control |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Flow Control Device | BY-PASS |
| Spring Operated Pressure Relief | NOT PROVIDED |
| Thread Direction | RIGHT-HAND |
| Operating Temp Rating | 1260.0 FAHRENHEIT NOMINAL DEGF |
| Thermostat Type | SOLID EXPANSION |
| Usage Design | LIMIT TEMP DUE TO EXCESSIVE LOAD |
| Distance Across Flats | 0.625 INCHES NOMINAL IN |
| Opening Temp Rating | 1240.0 FAHRENHEIT NOMINAL DEGF |
| Thread Size and Series/type Designator | 7/16-20 UNF |
| 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 |
|---|---|
| 107658-4 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| Reference | Meaning |
|---|---|
| 107658-4 | 5/2 Secondary reference U.S. Government activity |
| 107658-4 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
NSN 6685-00-305-7490 is a Thermostat,flow Control, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-305-7490 has 1 manufacturer part number on file: 107658-4 (Honeywell International Inc. Div Aerospace - Torrance).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-287-4615. Verify interchangeability with system specifications before substitution.
Key specifications for 107658-4: Flow Control Device: BY-PASS; Overall Height: 6.640 INCHES NOMINAL IN; Spring Operated Pressure Relief: NOT PROVIDED; Thread Direction: RIGHT-HAND. 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.