The Thermostat,flow Control, cataloged under National Stock Number 6685-01-366-3120, 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 Dover Corp Groen Div. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-366-3120 |
| Primary Part Number | 77985 |
| Item Name | Thermostat,flow Control |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Dover Corp Groen Div |
| Status | ACTIVE |
| 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 |
|---|---|
| 77985 PRIMARY | Dover Corp Groen Div (USA) |
| Reference | Meaning |
|---|---|
| 44160 | 5/9 Secondary reference Dover Corp Groen Div |
NSN 6685-01-366-3120 is a Thermostat,flow Control, manufactured by Dover Corp Groen Div, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-366-3120 has 1 manufacturer part number on file: 77985 (Dover Corp Groen Div).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-481-7089, 6515-01-521-5420. Verify interchangeability with system specifications before substitution.
Key specifications for 77985: End Item Identification: GENERATOR. 0 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.