The Extender Card,electronic Test, cataloged under National Stock Number 5998-00-421-6513, 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 General Dynamics Mission Systems, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5998-00-421-6513 |
| Primary Part Number | 57647000-01 |
| Item Name | Extender Card,electronic Test |
| FSC / FSG | 5998 / 59 — Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware |
| Manufacturer | General Dynamics Mission Systems, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | Y |
| Part Number | Manufacturer |
|---|---|
| 57647000-01 PRIMARY | General Dynamics Mission Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 57647000-01 | 5/9 Secondary reference General Dynamics Information Systems Inc. Dba General Dynamics Advanced Information Systems |
| 255420 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5998-00-421-6513 is a Extender Card,electronic Test, manufactured by General Dynamics Mission Systems, Inc., classified under FSC 5998, Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware. Status: active.
NSN 5998-00-421-6513 has 1 manufacturer part number on file: 57647000-01 (General Dynamics Mission Systems, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5130-01-685-3199. Verify interchangeability with system specifications before substitution.
Key specifications for 57647000-01: Overall Height: 0.304 INCHES NOMINAL IN; Overall Length: 9.420 INCHES NOMINAL IN; Overall Width: 6.780 INCHES NOMINAL IN. 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 5998-00-421-6513 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.