The Plate,antenna Mast, cataloged under National Stock Number 5985-01-559-9489, 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 Naval Sea Systems Command. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-559-9489 |
| Primary Part Number | 400-7661648 ITEM 15 |
| Item Name | Plate,antenna Mast |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Overall Diameter | 11.750 INCHES NOMINAL IN |
| Mounting Facility Circle Radius | 2.190 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Basic Shape Style | CYLINDRICAL |
| Material | NICKEL ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 400-7661648 ITEM 15 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 7661648 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5985-01-559-9489 is a Plate,antenna Mast, manufactured by Naval Sea Systems Command, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-559-9489 has 1 manufacturer part number on file: 400-7661648 ITEM 15 (Naval Sea Systems Command).
Key specifications for 400-7661648 ITEM 15: Overall Diameter: 11.750 INCHES NOMINAL IN; Mounting Facility Circle Radius: 2.190 INCHES NOMINAL IN; Criticality Code Justification: FEAT; Overall Length: 1.250 INCHES NOMINAL IN. 5 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 5985-01-559-9489 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.