The Filter Body,fluid, cataloged under National Stock Number 2945-01-109-3977, 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 Pall Aeropower Corporation. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2945-01-109-3977 |
| Primary Part Number | AD-A684BP-11D2A |
| Item Name | Filter Body,fluid |
| FSC / FSG | 2945 / 29 — Engine Air and Oil Filters, Cleaners, Aircraft Prime Moving |
| Manufacturer | Pall Aeropower Corporation |
| Status | ACTIVE |
| Body Outside Diameter | 2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN |
| Body Length | 4.535 INCHES MINIMUM AND 4.545 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY BODY |
| 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 |
|---|---|
| AD-A684BP-11D2A | Pall Aeropower Corporation (USA) |
| Reference | Meaning |
|---|---|
| 4-301-142-03 | 5/9 Secondary reference U.S. Government activity |
| 4-301-142-03 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2945-01-109-3977 is a Filter Body,fluid, manufactured by Pall Aeropower Corporation, classified under FSC 2945, Engine Air and Oil Filters, Cleaners, Aircraft Prime Moving. Status: active.
NSN 2945-01-109-3977 has 1 manufacturer part number on file: AD-A684BP-11D2A (Pall Aeropower Corporation).
Key specifications for AD-A684BP-11D2A: Body Outside Diameter: 2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN; Body Length: 4.535 INCHES MINIMUM AND 4.545 INCHES MAXIMUM IN; Special Features: WITH DIFFERENTIAL PRESSURE INDICATOR; Material: ALUMINUM ALLOY BODY. 3 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.