The Fixture,engine Maintenance,aircr, cataloged under National Stock Number 4920-01-391-9983, 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 Penn Scientific Products Company Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Fixture,engine Maintenance,aircr |
| FSC / FSG | 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment (FSG 49) |
| Manufacturers | Penn Scientific Products Company Inc (CAGE 07842) |
| Parameter | Value |
|---|---|
| NSN | 4920-01-391-9983 |
| Primary Part Number | 3C3566P20 |
| Item Name | Fixture,engine Maintenance,aircr |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Penn Scientific Products Company Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 3C3566P20 PRIMARY | Penn Scientific Products Company Inc (USA) |
NSN 4920-01-391-9983 is a Fixture,engine Maintenance,aircr, manufactured by Penn Scientific Products Company Inc, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-391-9983 has 1 manufacturer part number on file: 3C3566P20 (Penn Scientific Products Company Inc).
1 possible match (shared part number, not a government interchangeability claim): 4920-01-392-1706. Verify interchangeability with system specifications before substitution.
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.