The Filter,fluid, cataloged under National Stock Number 4330-01-197-7903, 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 The Boeing Company Div Defense. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4330-01-197-7903 |
| Primary Part Number | ST7M418-2 |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Mounting Hole Quantity | 2 |
| Filtration Rating in Microns | 25.0 ABSOLUTE |
| Distance From Bottom of Body to Center of Inlet | 3.560 INCHES NOMINAL IN |
| First Intake Nominal Thread Size | 0.718 INCHES IN |
| First Intake Thread Series Designator | UNJS |
| Center to Center Distance Between Connections | 0.625 INCHES NOMINAL IN |
| Design Type | REUSABLE |
| Temp Rating | -65.0 FAHRENHEIT MINIMUM AND 220.0 FAHRENHEIT MAXIMUM DEGF |
| First Intake Thread Direction | RIGHT-HAND |
| Body Height | 4.880 INCHES NOMINAL IN |
| First Intake Connection Type | THREADED EXTERNAL TUBE END |
| First Intake Thread Class | 3A A |
| Style Designator | DIVERTED FLOW BASKET STRAINER W/THREADED COVER |
| Mounting Hole Diameter | 0.193 INCHES NOMINAL IN |
| Operating Pressure | 133.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Filtering Element Quantity | 1 |
| Body Length | 4.605 INCHES NOMINAL IN |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Differential Pressure | ERR-060 |
| First Intake Thread Quantity Per Inch | 20 |
| Mounting Type | UNTHREADED HOLE BACK |
| 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 |
|---|---|
| ADA530-81 | Pall Aeropower Corporation (USA) |
| ST7M418-2 PRIMARY | The Boeing Company Div Defense (USA) |
| 7590443-101 | Pti Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 10110597 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| ST7M418 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 4330-01-197-7903 is a Filter,fluid, manufactured by The Boeing Company Div Defense, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-197-7903 has 3 manufacturer part numbers on file: ADA530-81 (Pall Aeropower Corporation), ST7M418-2 (The Boeing Company Div Defense), 7590443-101 (Pti Technologies Inc.).
Key specifications for ST7M418-2: Mounting Hole Quantity: 2; Filtration Rating in Microns: 25.0 ABSOLUTE; Distance From Bottom of Body to Center of Inlet: 3.560 INCHES NOMINAL IN; First Intake Nominal Thread Size: 0.718 INCHES IN. 21 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.