The Filter,fluid, cataloged under National Stock Number 4330-01-044-9453, 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 Raytheon Company Dba Raytheon Co. Government technical data includes 12 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-044-9453 |
| Primary Part Number | 581937-10 |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Design Type | NONREUSABLE |
| Body Outside Diameter | 0.380 INCHES NOMINAL IN |
| First Intake Connection Type | UNTHREADED INTERNAL TUBE LINE |
| Style Designator | INLINE (HYDRAULIC) |
| Filtering Element Quantity | 2 |
| Body Length | 17.000 INCHES NOMINAL IN |
| Filtering System for Which Designed | FULL FLOW |
| First Intake Nominal Inside Diameter | 0.200 INCHES IN |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE BODY |
| Material | WOOL FILTERING MEDIUM |
| Mounting Type | INLET CONNECTION AND OUTLET CONNECTION LINE |
| 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 |
|---|---|
| 581937-10 | Raytheon Company (USA) |
| 581937-10 PRIMARY | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| 581937-10 | 5/9 Secondary reference Raytheon Service Co Logistics Support Center |
| 581934-10 | 5/9 Secondary reference Raytheon Service Co Logistics Support Center |
| 581934 | D/9 Drawing number reference only Raytheon Company Dba Raytheon Co |
| 581934 | 5/9 Secondary reference Raytheon Company Div Corp |
| 581934-10 | 5/9 Secondary reference Raytheon Company Div Corp |
NSN 4330-01-044-9453 is a Filter,fluid, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-044-9453 has 2 manufacturer part numbers on file: 581937-10 (Raytheon Company), 581937-10 (Raytheon Company Dba Raytheon Co).
4 possible matches (shared part number, not a government interchangeability claim): 4330-01-045-0018, 4330-01-055-4528, 4330-01-055-4529. Verify interchangeability with system specifications before substitution.
Key specifications for 581937-10: Design Type: NONREUSABLE; Body Outside Diameter: 0.380 INCHES NOMINAL IN; First Intake Connection Type: UNTHREADED INTERNAL TUBE LINE; Style Designator: INLINE (HYDRAULIC). 12 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.