The Filter,fluid, cataloged under National Stock Number 4330-01-641-4986, 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 United Filtration Systems, Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-641-4986 |
| Primary Part Number | SLH818-3/4 |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | United Filtration Systems, Inc |
| Status | ACTIVE |
| Design Type | REUSABLE |
| Body Outside Diameter | 4.000 INCHES NOMINAL IN |
| Body Height | 8.875 INCHES NOMINAL IN |
| Style Designator | UNTHREADED SHELL |
| Operating Pressure | 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Filtering Element Quantity | 1 |
| Material | STEEL COMP 316 BODY |
| Material | RUBBER SYNTHETIC SEAL |
| 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 |
|---|---|
| SLH818-3/4 PRIMARY | United Filtration Systems, Inc (USA) |
| Reference | Meaning |
|---|---|
| BB-8001988-01(27) | 5/2 Secondary reference U.S. Government activity |
| 818SS4VP | 5/9 Secondary reference United Filtration Systems, Inc |
NSN 4330-01-641-4986 is a Filter,fluid, manufactured by United Filtration Systems, Inc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-641-4986 has 1 manufacturer part number on file: SLH818-3/4 (United Filtration Systems, Inc).
Key specifications for SLH818-3/4: Design Type: REUSABLE; Body Outside Diameter: 4.000 INCHES NOMINAL IN; Body Height: 8.875 INCHES NOMINAL IN; Style Designator: UNTHREADED SHELL. 8 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.