The Accumulator,hydraulic, cataloged under National Stock Number 1650-00-640-8488, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is Sielman S.a.. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-640-8488 |
| Primary Part Number | MS28700-6 |
| Item Name | Accumulator,hydraulic |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Sielman S.a. |
| Status | ACTIVE |
| Bleeder Opening | NOT INCLUDED |
| Overall Diameter | 5.500 INCHES MAXIMUM IN |
| Cubic Capacity | 200.000 CUBIC INCHES |
| Port Screw Thread Diameter | 0.500 INCHES MINIMUM AND 1.063 INCHES MAXIMUM IN |
| Port Screw Thread Series Designator | UNF AND UN |
| Shape | CYLINDRICAL |
| Operating Pressure | 3000.000 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Port Screw Thread Quantity Per Inch | 20.000 AND 12.000 |
| Separator Type | PISTON |
| Thread Class | 3B |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| MS28700-6 | Sielman S.a. (GRC) |
| Reference | Meaning |
|---|---|
| MS28700-6 | 2/2 Government specification standardization U.S. Government activity |
| MS28700-6 | 5/1 Secondary reference U.S. Government activity |
NSN 1650-00-640-8488 is a Accumulator,hydraulic, manufactured by Sielman S.a., classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-640-8488 has 1 manufacturer part number on file: MS28700-6 (Sielman S.a.).
Key specifications for MS28700-6: Bleeder Opening: NOT INCLUDED; Overall Diameter: 5.500 INCHES MAXIMUM IN; Cubic Capacity: 200.000 CUBIC INCHES; Port Screw Thread Diameter: 0.500 INCHES MINIMUM AND 1.063 INCHES MAXIMUM 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 1650-00-640-8488 has DEMIL Code Q. 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.