The Filter,fluid, cataloged under National Stock Number 4330-01-422-4061, 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 Wm W Nugent & Co Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4330-01-422-4061 |
| Primary Part Number | MODEL NUMBER 1577-224B-SN-M |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Wm W Nugent & Co Inc |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Distance From Bottom of Body to Center of Inlet | 27.000 INCHES NOMINAL IN |
| Drop Pressure | ERR-060 |
| Design Type | LIMITED |
| Body Outside Diameter | 45.250 INCHES NOMINAL IN |
| Body Height | 76.250 INCHES NOMINAL IN |
| First Intake Connection Type | PLAIN FACE FLANGE SIDE |
| Style Designator | LEG MOUNTED BODY AND COVER ASSY (SWING BOLTED) |
| Mounting Hole Diameter | 1.000 INCHES NOMINAL IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Filtering System for Which Designed | FULL FLOW |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| First Discharge Nominal Outside Diameter | 8.000 INCHES IN |
| Bracket Quantity | 4 |
| Mounting Type | BRACKET W/DRILLED HOLE BOTTOM |
| 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 |
|---|---|
| MODEL NUMBER 1577-224B-SN-M PRIMARY | Wm W Nugent & Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 90-175 | C/1 Advisory reference — outside the item-of-supply concept Wm W Nugent & Co Inc |
| 90-175-201 | 5/1 Secondary reference Wm W Nugent & Co Inc |
NSN 4330-01-422-4061 is a Filter,fluid, manufactured by Wm W Nugent & Co Inc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-422-4061 has 1 manufacturer part number on file: MODEL NUMBER 1577-224B-SN-M (Wm W Nugent & Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 6685-01-435-7610. Verify interchangeability with system specifications before substitution.
Key specifications for MODEL NUMBER 1577-224B-SN-M: Mounting Hole Quantity: 4; Distance From Bottom of Body to Center of Inlet: 27.000 INCHES NOMINAL IN; Drop Pressure: ERR-060; Design Type: LIMITED. 15 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.