The Accumulator,hydraulic, cataloged under National Stock Number 4920-01-184-9991, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-184-9991 |
| Item Name | Accumulator,hydraulic |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Status | ACTIVE |
| Bleeder Opening | NOT INCLUDED |
| Maximum Fluid Volume | 580.000 CUBIC INCHES |
| Overall Diameter | 4.750 INCHES NOMINAL IN |
| Port Screw Thread Diameter | 0.437 INCHES NOMINAL IN |
| Port Screw Thread Series Designator | UNF |
| Shape | CYLINDRICAL |
| Operating Pressure | 3000.000 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Port Screw Thread Quantity Per Inch | 20.000 |
| Separator Type | PISTON |
| Thread Class | 2B |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 6538E244-5 | 3/2 Design control — primary reference U.S. Government activity |
| 6538E244-5 | 7/2 Vendor item drawing reference Indal Technologies Inc |
| 836-714-5 | 5/9 Secondary reference Safran Landing Systems Canada Inc. |
NSN 4920-01-184-9991 is a Accumulator,hydraulic, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
Key specifications for 4920-01-184-9991: Bleeder Opening: NOT INCLUDED; Maximum Fluid Volume: 580.000 CUBIC INCHES; Overall Diameter: 4.750 INCHES NOMINAL IN; Port Screw Thread Diameter: 0.437 INCHES NOMINAL IN. 11 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.
NSN 4920-01-184-9991 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.