The Circuit Card Assembly, cataloged under National Stock Number 5998-01-221-4523, 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 Pyott-Boone Electronics, Inc. Dba Pyott-Boone Electronics 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5998-01-221-4523 |
| Primary Part Number | 643-9278-001 |
| Item Name | Circuit Card Assembly |
| FSC / FSG | 5998 / 59 — Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware |
| Manufacturer | Pyott-Boone Electronics, Inc. Dba Pyott-Boone Electronics Inc |
| 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 | JH |
| Weight | 2.4000 lbs |
| Cube | 0.0799 cu ft |
| Part Number | Manufacturer |
|---|---|
| 643-9278-001 PRIMARY | Pyott-Boone Electronics, Inc. Dba Pyott-Boone Electronics Inc (USA) |
| Reference | Meaning |
|---|---|
| 5749615-019 | 3/9 Design control — primary reference Textron Systems Corp |
| 438-5749867 FN-18 | 5/9 Secondary reference Textron Systems Corp |
NSN 5998-01-221-4523 is a Circuit Card Assembly, manufactured by Pyott-Boone Electronics, Inc. Dba Pyott-Boone Electronics Inc, classified under FSC 5998, Electrical and Electronic Assemblies, Boards, Cards, and Associated Hardware. Status: active.
NSN 5998-01-221-4523 has 1 manufacturer part number on file: 643-9278-001 (Pyott-Boone Electronics, Inc. Dba Pyott-Boone Electronics Inc).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-268-8133. Verify interchangeability with system specifications before substitution.
Key specifications for 643-9278-001: Special Features: PRINTED WIRING BOARD 1,AMPLIFIER 6,VOLTAGE REGULATOR 2,CONNECTOR 1,CAPACITOR 34,RELAY 6,RESISTOR 96,MICROCIRCUIT 6,COMPARATOR 6. 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 5998-01-221-4523 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.