The Antenna, cataloged under National Stock Number 5985-01-525-5583, 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 Amentum Services, Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-525-5583 |
| Primary Part Number | 4200521-03 |
| Item Name | Antenna |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Amentum Services, Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4200521-03 PRIMARY | Amentum Services, Inc (USA) |
| Reference | Meaning |
|---|---|
| 4200521 | D/9 Drawing number reference only Bae Flight Systems Inc |
NSN 5985-01-525-5583 is a Antenna, manufactured by Amentum Services, Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-525-5583 has 1 manufacturer part number on file: 4200521-03 (Amentum Services, Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5985-01-525-5587, 5985-01-525-5592. Verify interchangeability with system specifications before substitution.
Key specifications for 4200521-03: Overall Length: 7.550 INCHES NOMINAL IN; Special Features: MATERIAL: ALLOY STOCK 7075; SURFACE TREATMENT: PRIME FAR SIDE WITH MIL-P-53022 TYPE K; CALLED A DOUBLER ANTENNA.; End Item Identification: AN/ARC 220 (V) COMMUNICATION SYSTEM; WS: HELICOPTER, BLACK HAWK UH-60A. A. 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.
NSN 5985-01-525-5583 has DEMIL Code D. 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.