The Piston,hydraulic Accumulator, cataloged under National Stock Number 2590-01-074-8144, is classified within Federal Supply Class 2590 (Miscellaneous Vehicular Components) of the Vehicular Equipment Components group. The manufacturer of record is Naval Sea Systems Command. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 2590-01-074-8144 |
| Primary Part Number | 845-4687550-0003 |
| Item Name | Piston,hydraulic Accumulator |
| FSC / FSG | 2590 / 25 — Miscellaneous Vehicular Components |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| 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 |
|---|---|
| 845-4687550-0003 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 4687550-3 | 5/2 Secondary reference U.S. Government activity |
| 4687550 | D/9 Drawing number reference only U.S. Government activity |
| 2642-693-03ITEM3 | 5/2 Secondary reference U.S. Government activity |
| 4687550-0003 | 3/2 Design control — primary reference U.S. Government activity |
| 845-4687550 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 2590-01-074-8144 is a Piston,hydraulic Accumulator, manufactured by Naval Sea Systems Command, classified under FSC 2590, Miscellaneous Vehicular Components. Status: active.
NSN 2590-01-074-8144 has 1 manufacturer part number on file: 845-4687550-0003 (Naval Sea Systems Command).
3 possible matches (shared part number, not a government interchangeability claim): 3040-01-086-8776, 4730-01-094-2978, 4730-01-094-2979. Verify interchangeability with system specifications before substitution.
Key specifications for 845-4687550-0003: Special Features: NICKEL,ALUMINUM,BRONZE; 13.468 IN. OD; 4.060 IN. LG; W/COUNTERBORED CENTER HOLE 2.060 IN DEEP; AND 8 COUNTERSUNK THREADED HOLES,0.500-13 UNC,ON A 4.375 IN. DIA BOLT CIRCLE; ALSO CONTAINS 2 RING GROOVES IN. 0 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.