The Alarm,low Pressure, cataloged under National Stock Number 6685-01-520-6209, 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 Am General Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6685-01-520-6209 |
| Primary Part Number | 5598991 |
| Item Name | Alarm,low Pressure |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Am General Llc |
| 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 |
|---|---|
| 5598991 PRIMARY | Am General Llc (USA) |
| Reference | Meaning |
|---|---|
| 456720030809 | 6/9 Informative reference only Ncb Hungary (honvedsegi Egyseges Termekkod) |
NSN 6685-01-520-6209 is a Alarm,low Pressure, manufactured by Am General Llc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-520-6209 has 1 manufacturer part number on file: 5598991 (Am General Llc).
1 possible match (shared part number, not a government interchangeability claim): 2540-01-522-1794. Verify interchangeability with system specifications before substitution.
Key specifications for 5598991: Special Features: USED ON AM GENERAL DESIGNED CENTRAL TIRE INFLATION SYSTEM; End Item Identification: HIGH MOBILITY MULTIPURPOSE WHEELED VEHICLE (HMMWV). 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.