The Cylinder,hydraulic Accumulator, cataloged under National Stock Number 3040-00-003-2155, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-003-2155 |
| Primary Part Number | 2889981 |
| Item Name | Cylinder,hydraulic Accumulator |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Mounting Facility Circle Diameter | 1.000 INCHES MAXIMUM IN |
| Overall Diameter | 1.263 INCHES MAXIMUM IN |
| Mounting Provision Arrangement Style | SIX HOLE BOLT CIRCLE |
| Body Material | ALUMINUM |
| Bore Diameter | 1.250 INCHES MAXIMUM IN |
| Mounting Type and Location | FLANGE CYLINDER HEAD END |
| 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 |
|---|---|
| 2889981 | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 2491575 | 5/9 Secondary reference U.S. Government activity |
| 2483541 | 5/9 Secondary reference U.S. Government activity |
| 2889981 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-003-2155 is a Cylinder,hydraulic Accumulator, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-003-2155 has 1 manufacturer part number on file: 2889981 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for 2889981: Mounting Facility Circle Diameter: 1.000 INCHES MAXIMUM IN; Overall Diameter: 1.263 INCHES MAXIMUM IN; Mounting Provision Arrangement Style: SIX HOLE BOLT CIRCLE; Overall Length: 6.730 INCHES MAXIMUM IN. 6 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.