The Plugboard Assembly, cataloged under National Stock Number 4920-00-172-6554, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Mac Panel Co. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4920-00-172-6554 |
| Primary Part Number | 209221 |
| Item Name | Plugboard Assembly |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Mac Panel Co |
| Status | ACTIVE |
| FSC Application Data | CIRCUIT CARD ADAPTER P/N 10038169-101 |
| General Characteristics Item Description | GENERAL PURPOSE BLACK PHENOLIC SET INTO EXTRUDED ALUMINUM FRAMES; 11.625 IN. LG,11.062 IN. W,1.250 IN. H IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 209221 PRIMARY | Mac Panel Co (USA) |
NSN 4920-00-172-6554 is a Plugboard Assembly, manufactured by Mac Panel Co, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-00-172-6554 has 1 manufacturer part number on file: 209221 (Mac Panel Co).
2 possible matches (shared part number, not a government interchangeability claim): 1075-01-383-0697, 3120-01-621-7641. Verify interchangeability with system specifications before substitution.
Key specifications for 209221: FSC Application Data: CIRCUIT CARD ADAPTER P/N 10038169-101; General Characteristics Item Description: GENERAL PURPOSE BLACK PHENOLIC SET INTO EXTRUDED ALUMINUM FRAMES; 11.625 IN. LG,11.062 IN. W,1.250 IN. H IN; End Item Identification: MODULE TEST STATION. 2 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.
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.