The Filter,fluid, cataloged under National Stock Number 4330-01-288-4008, 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 Howell Laboratories Inc Dba Howell Laboratories Inc. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-288-4008 |
| Primary Part Number | 4921C |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Howell Laboratories Inc Dba Howell Laboratories Inc |
| Status | ACTIVE |
| Filtration Rating in Microns | 0.080 ABSOLUTE AND 0.008 NOMINAL |
| First Intake Nominal Thread Size | 0.750 INCHES IN |
| First Intake Thread Series Designator | NPT |
| Design Type | REUSABLE |
| First Intake Thread Direction | RIGHT-HAND |
| First Intake Connection Type | THREADED INTERNAL PIPE HEAD SIDE |
| Filtering Element Quantity | 1 |
| Filtering System for Which Designed | FULL FLOW |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Media for Which Designed | AIR |
| Material | COPPER ALLOY BODY |
| Material | RUBBER BUNA N SEAL |
| Material | STEEL CORROSION RESISTING SEDIMENT BOWL |
| 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 |
|---|---|
| 4921C PRIMARY | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
NSN 4330-01-288-4008 is a Filter,fluid, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-288-4008 has 1 manufacturer part number on file: 4921C (Howell Laboratories Inc Dba Howell Laboratories Inc).
Key specifications for 4921C: Filtration Rating in Microns: 0.080 ABSOLUTE AND 0.008 NOMINAL; First Intake Nominal Thread Size: 0.750 INCHES IN; First Intake Thread Series Designator: NPT; Design Type: REUSABLE. 13 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.