The Adapter,antenna to Antenna Base, cataloged under National Stock Number 5985-00-923-0549, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is General Dynamics Mission Systems, Inc. Dba Gdms. Government technical data includes 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-923-0549 |
| Primary Part Number | 4258-45262 |
| Item Name | Adapter,antenna to Antenna Base |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | General Dynamics Mission Systems, Inc. Dba Gdms |
| Status | ACTIVE |
| Overall Diameter | 3.000 INCHES NOMINAL IN |
| Material | ALUMINUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4258-45262 | General Dynamics Mission Systems, Inc. Dba Gdms (USA) |
| Reference | Meaning |
|---|---|
| 4258-45262 | 5/9 Secondary reference U.S. Government activity |
| SM-D-497600 | 3/2 Design control — primary reference U.S. Government activity |
| 258-45262 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-923-0549 is a Adapter,antenna to Antenna Base, manufactured by General Dynamics Mission Systems, Inc. Dba Gdms, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-923-0549 has 1 manufacturer part number on file: 4258-45262 (General Dynamics Mission Systems, Inc. Dba Gdms).
Key specifications for 4258-45262: Overall Diameter: 3.000 INCHES NOMINAL IN; Overall Length: 8.500 INCHES NOMINAL IN; Material: ALUMINUM. 2 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.
NSN 5985-00-923-0549 has DEMIL Code B. 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.