The Filter Element,fluid, cataloged under National Stock Number 4330-01-320-8327, 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 Wix Corp. Government technical data includes 11 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. 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 | 4330-01-320-8327 |
| Primary Part Number | 51681 |
| Item Name | Filter Element,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Wix Corp |
| Status | ACTIVE |
| Filtering Media Design | PLEATED SINGLE FILTERING MEDIA RESPONSE |
| Body Diameter | 4.234 INCHES NOMINAL IN |
| Body Overall Length | 9.759 INCHES NOMINAL IN |
| Flow Direction | INSIDE OUT |
| Design Type | NONREUSABLE |
| Style Designator | CYLINDRICAL W/ INTEGRAL OUTER CASING |
| Nominal Thread Size | 1.375 INCHES IN |
| Filtering System for Which Designed | FULL FLOW |
| Media for Which Designed | FUEL/OIL, HYDROCARBON |
| Material | PAPER FILTERING MEDIUM |
| Thread Series Designator | UN |
| 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 |
|---|---|
| 51681 PRIMARY | Wix Corp (USA) |
NSN 4330-01-320-8327 is a Filter Element,fluid, manufactured by Wix Corp, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-320-8327 has 1 manufacturer part number on file: 51681 (Wix Corp).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-699-3605. Verify interchangeability with system specifications before substitution.
Key specifications for 51681: Filtering Media Design: PLEATED SINGLE FILTERING MEDIA RESPONSE; Body Diameter: 4.234 INCHES NOMINAL IN; Body Overall Length: 9.759 INCHES NOMINAL IN; Flow Direction: INSIDE OUT. 11 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.