The Circuit Card Assembly, cataloged under National Stock Number 5998-00-421-8557, is classified within Federal Supply Class 5998 (Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Telephonics Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5998-00-421-8557 |
| Primary Part Number | 374271-1 |
| Item Name | Circuit Card Assembly |
| FSC / FSG | 5998 / 59 — Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware |
| Manufacturer | Telephonics Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | JF |
| Weight | 0.7200 lbs |
| Cube | 0.1049 cu ft |
| Part Number | Manufacturer |
|---|---|
| 374271-1 PRIMARY | Telephonics Corporation (USA) |
| Reference | Meaning |
|---|---|
| 374271-1 | 5/9 Secondary reference L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products |
NSN 5998-00-421-8557 is a Circuit Card Assembly, manufactured by Telephonics Corporation, classified under FSC 5998, Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware. Status: active.
NSN 5998-00-421-8557 has 1 manufacturer part number on file: 374271-1 (Telephonics Corporation).
1 possible match (shared part number, not a government interchangeability claim): 1560-00-987-6115. Verify interchangeability with system specifications before substitution.
Key specifications for 374271-1: End Item Identification: GROUND NAVIGATION AIDS NAVAIDS PROJECT, 404L (TRACLS). 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5998-00-421-8557 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.