The Filter,breather, cataloged under National Stock Number 4330-01-194-1667, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Filter,breather |
| FSC / FSG | 4330 — Centrifugals, Separators, and Pressure and Vacuum Filters (FSG 43) |
| Parameter | Value |
|---|---|
| NSN | 4330-01-194-1667 |
| Item Name | Filter,breather |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| 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 |
| Reference | Meaning |
|---|---|
| 635J770 | D/9 Drawing number reference only U.S. Government activity |
| 521C043 PIECE 02 | 3/2 Design control — primary reference U.S. Government activity |
| 635J770 PIECE 11 | 3/2 Design control — primary reference U.S. Government activity |
| 521C043 | D/9 Drawing number reference only U.S. Government activity |
NSN 4330-01-194-1667 is a Filter,breather, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
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.