The Extender Card,electronic Test, cataloged under National Stock Number 5998-01-090-5481, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Item Name | Extender Card,electronic Test |
| FSC / FSG | 5998 — Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware (FSG 59) |
| Manufacturers | Telephonics Corporation (CAGE 64694) |
| Parameter | Value |
|---|---|
| NSN | 5998-01-090-5481 |
| Primary Part Number | 503999-1 |
| Item Name | Extender Card,electronic Test |
| 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 |
| Unit of Issue | EA |
| Acquisition advice code | J |
| Weight | 2.4400 lbs |
| Cube | 0.5124 cu ft |
| Part Number | Manufacturer |
|---|---|
| 503999-1 PRIMARY | Telephonics Corporation (USA) |
| Reference | Meaning |
|---|---|
| 503999-1 | 5/9 Secondary reference L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products |
NSN 5998-01-090-5481 is a Extender Card,electronic Test, manufactured by Telephonics Corporation, classified under FSC 5998, Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware. Status: active.
NSN 5998-01-090-5481 has 1 manufacturer part number on file: 503999-1 (Telephonics Corporation).
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 5998-01-090-5481 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.