The Filter Element,fluid, cataloged under National Stock Number 4330-01-413-1337, 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 W S O'shea Company 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-413-1337 |
| Primary Part Number | SF6520 |
| Item Name | Filter Element,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | W S O'shea Company 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 |
|---|---|
| SF6520 PRIMARY | W S O'shea Company Inc (USA) |
| Reference | Meaning |
|---|---|
| S2B | 5/9 Secondary reference Conmaco Inc |
NSN 4330-01-413-1337 is a Filter Element,fluid, manufactured by W S O'shea Company Inc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-413-1337 has 1 manufacturer part number on file: SF6520 (W S O'shea Company Inc).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-415-6816. Verify interchangeability with system specifications before substitution.
Key specifications for SF6520: Special Features: READY FOR BACK TRANSFER; J6R; 5-20-2008.. 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.