The Alarm Unit,chemical Agent Automa, cataloged under National Stock Number 6665-01-458-5903, is classified within Federal Supply Class 6665 (Hazard-detecting Instruments and Apparatus) of the Instruments and Laboratory Equipment group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Alarm Unit,chemical Agent Automa |
| FSC / FSG | 6665 — Hazard-detecting Instruments and Apparatus (FSG 66) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 6665-01-458-5903 |
| Primary Part Number | 6573973 |
| Item Name | Alarm Unit,chemical Agent Automa |
| FSC / FSG | 6665 / 66 — Hazard-detecting Instruments and Apparatus |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| 6573973 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6573973 | 5/9 Secondary reference Powertronic Systems Inc |
| 6573973 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6665-01-458-5903 is a Alarm Unit,chemical Agent Automa, manufactured by Naval Sea Systems Command, classified under FSC 6665, Hazard-detecting Instruments and Apparatus. Status: active.
NSN 6665-01-458-5903 has 1 manufacturer part number on file: 6573973 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 6150-01-481-4087, 6150-01-481-4091. Verify interchangeability with system specifications before substitution.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 6665-01-458-5903 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.