The Filter Assembly,fluid, cataloged under National Stock Number 4330-01-321-6481, 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 Maradyne Corporation. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-321-6481 |
| Primary Part Number | 41-94000006F1 |
| Item Name | Filter Assembly,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Maradyne Corporation |
| Status | ACTIVE |
| Filtering Media Design | MESH SINGLE FILTERING MEDIA RESPONSE |
| First Discharge Connection Type | UNTHREADED INTERNAL TUBE BOTTOM |
| Mounting Hole Quantity | 4 |
| Surface Treatment Document and Classification | QQ-Z-325,TYPE 2,CLASS 2 FED SPEC ALL TREATMENT RESPONSES BODY |
| Surface Treatment Document and Classification | QQ-Z-325,TYPE 2,CLASS 2 FED SPEC ALL TREATMENT RESPONSES FILTERING MEDIUM |
| Distance Between Mounting Hole Centers | 1.875 INCHES NOMINAL IN |
| Design Type | REUSABLE |
| First Intake Flange Thickness | 0.250 INCHES NOMINAL IN |
| First Intake Flange Width | 2.500 INCHES NOMINAL IN |
| First Intake Flange Length | 6.123 INCHES NOMINAL IN |
| First Discharge Nominal Inside Diameter | 1.625 INCHES IN |
| Mesh Size | 225.0 |
| First Intake Connection Type | PLAIN FACE FLANGE LINE |
| Mounting Hole Diameter | 0.281 INCHES NOMINAL IN |
| First Intake Flange Shape Style | RECTANGULAR W/UNTHREADED BOLT HOLES |
| Filtering Element Quantity | 2 |
| Filtering System for Which Designed | FULL FLOW |
| First Discharge Connection Relationship to Intake Connection | NOT IDENTICAL |
| Surface Treatment | ZINC BODY |
| Surface Treatment | ZINC FILTERING MEDIUM |
| Material | STEEL BODY |
| Material | STEEL FILTERING MEDIUM |
| Unit Quantity | 2 |
| Mounting Type | UNTHREADED HOLE TOP |
| First Intake Flange Face Style | PLAIN |
| Wire Diameter | 0.005 INCHES NOMINAL IN |
| 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 |
|---|---|
| 41-94000006F1 PRIMARY | Maradyne Corporation (USA) |
| 94000006F1 PRIMARY | Maradyne Corporation (USA) |
| Reference | Meaning |
|---|---|
| 94000006F1 | 3/9 Design control — primary reference Marion Manufacturing Co Inc Dba Marion Fluid Power Division |
| 94000006 | 5/9 Secondary reference Link-Belt Cranes, L.p., Lllp |
| 94000006F1 | 5/9 Secondary reference Dreison International, Inc. |
| 2531273 | D/9 Drawing number reference only Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 94000006 | 5/9 Secondary reference Dreison International, Inc. |
| 94000006 | 5/9 Secondary reference Michigan Dynamics Inc |
NSN 4330-01-321-6481 is a Filter Assembly,fluid, manufactured by Maradyne Corporation, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-321-6481 has 2 manufacturer part numbers on file: 41-94000006F1 (Maradyne Corporation), 94000006F1 (Maradyne Corporation).
Key specifications for 41-94000006F1: Filtering Media Design: MESH SINGLE FILTERING MEDIA RESPONSE; First Discharge Connection Type: UNTHREADED INTERNAL TUBE BOTTOM; Mounting Hole Quantity: 4; Surface Treatment Document and Classification: QQ-Z-325,TYPE 2,CLASS 2 FED SPEC ALL TREATMENT RESPONSES BODY. 26 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.