The Adapter Assembly, cataloged under National Stock Number 2945-01-421-9301, is classified within Federal Supply Class 2945 (Engine Air and Oil Filters, Cleaners, Aircraft Prime Moving) of the Engine Accessories group. The manufacturer of record is Textron Aviation Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 2945-01-421-9301 |
| Primary Part Number | 641639 |
| Item Name | Adapter Assembly |
| FSC / FSG | 2945 / 29 — Engine Air and Oil Filters, Cleaners, Aircraft Prime Moving |
| Manufacturer | Textron Aviation 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 |
|---|---|
| 641639 PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| 641639 | 3/9 Design control — primary reference Beechcraft Corporation Dba Textron Aviation |
NSN 2945-01-421-9301 is a Adapter Assembly, manufactured by Textron Aviation Inc, classified under FSC 2945, Engine Air and Oil Filters, Cleaners, Aircraft Prime Moving. Status: active.
NSN 2945-01-421-9301 has 1 manufacturer part number on file: 641639 (Textron Aviation Inc).
Key specifications for 641639: End Item Identification: BEECHCRAFT BONANZA. 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.
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.