The Filter Element,fluid, cataloged under National Stock Number 4330-01-084-7143, 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 Allenair Corp. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-084-7143 |
| Primary Part Number | S1/4NPT |
| Item Name | Filter Element,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Allenair Corp |
| Status | ACTIVE |
| Filtering Media Design | SINTERED SINGLE FILTERING MEDIA RESPONSE |
| Body Diameter | 0.500 INCHES NOMINAL IN |
| Body Overall Length | 1.230 INCHES NOMINAL IN |
| Flow Direction | OUTSIDE IN |
| Design Type | LIMITED |
| Style Designator | SUMP TYPE |
| Nominal Thread Size | 0.250 INCHES IN |
| Media for Which Designed | AIR |
| Material | COPPER ALLOY FILTERING MEDIUM |
| Thread Series Designator | NPT |
| 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 |
|---|---|
| S1/4NPT PRIMARY | Allenair Corp (USA) |
| Reference | Meaning |
|---|---|
| S-1/4-N.P.T. | 5/9 Secondary reference U.S. Government activity |
NSN 4330-01-084-7143 is a Filter Element,fluid, manufactured by Allenair Corp, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-084-7143 has 1 manufacturer part number on file: S1/4NPT (Allenair Corp).
Key specifications for S1/4NPT: Filtering Media Design: SINTERED SINGLE FILTERING MEDIA RESPONSE; Body Diameter: 0.500 INCHES NOMINAL IN; Body Overall Length: 1.230 INCHES NOMINAL IN; Flow Direction: OUTSIDE IN. 10 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.