The Filter Assembly,fluid, cataloged under National Stock Number 4330-01-464-2056, 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 Air Systems International, Inc. (used in VA by: Air Systems, Inc.) Dba Air Systems International Inc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Filter Assembly,fluid |
| FSC / FSG | 4330 — Centrifugals, Separators, and Pressure and Vacuum Filters (FSG 43) |
| Manufacturers | Air Systems International, Inc. (used in VA by: Air Systems, Inc.) Dba Air Systems International Inc (CAGE 42905) |
| Parameter | Value |
|---|---|
| NSN | 4330-01-464-2056 |
| Primary Part Number | WL020BF |
| Item Name | Filter Assembly,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Air Systems International, Inc. (used in VA by: Air Systems, Inc.) Dba Air Systems International 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 |
|---|---|
| BB100NNS26 ITEM 50 | Air Systems International, Inc. (used in VA by: Air Systems, Inc.) Dba Air Systems International Inc (USA) |
| WL020BF PRIMARY | Air Systems International, Inc. (used in VA by: Air Systems, Inc.) Dba Air Systems International Inc (USA) |
| Reference | Meaning |
|---|---|
| BB100NNS26 | D/9 Drawing number reference only Air Systems International, Inc. (used in VA by: Air Systems, Inc.) Dba Air Systems International Inc |
NSN 4330-01-464-2056 is a Filter Assembly,fluid, manufactured by Air Systems International, Inc. (used in VA by: Air Systems, Inc.) Dba Air Systems International Inc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-464-2056 has 2 manufacturer part numbers on file: BB100NNS26 ITEM 50 (Air Systems International, Inc. (used in VA by: Air Systems, Inc.) Dba Air Systems International Inc), WL020BF (Air Systems International, Inc. (used in VA by: Air Systems, Inc.) Dba Air Systems International Inc).
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.