The Cover,fluid Filter, cataloged under National Stock Number 4330-01-157-8820, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. The manufacturer of record is Pall Aeropower Corporation. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4330-01-157-8820 |
| Primary Part Number | AD-9860-B1 |
| Item Name | Cover,fluid Filter |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Pall Aeropower Corporation |
| Status | ACTIVE |
| Mounting Hole Type and Quantity | 4 PLAIN |
| EAR Radius | 0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Inverted Radius | 0.380 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Body Radius | 2.062 INCHES NOMINAL IN |
| Bolt Circle Diameter | 4.125 INCHES NOMINAL IN |
| Peripheral Shape Style | CIRCULAR W/FLAT EARS |
| Hole Diameter | 0.338 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN |
| Attachment Method | BOLTED |
| 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-9860-B1 PRIMARY | Pall Aeropower Corporation (USA) |
| 2179793 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| AD-9860-B1 | 5/9 Secondary reference Aircraft Porous Media Inc |
| 2179793 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 4330-01-157-8820 is a Cover,fluid Filter, manufactured by Pall Aeropower Corporation, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-157-8820 has 2 manufacturer part numbers on file: AD-9860-B1 (Pall Aeropower Corporation), 2179793 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for AD-9860-B1: Mounting Hole Type and Quantity: 4 PLAIN; EAR Radius: 0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN; Mounting Opening Shape Style: UNTHREADED HOLE; Inverted Radius: 0.380 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN. 9 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.