The Cylinder Assembly,actuating,line, cataloged under National Stock Number 3040-00-673-7810, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-673-7810 |
| Primary Part Number | LD490347 |
| Item Name | Cylinder Assembly,actuating,line |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First Piston Rod End Thread Class | 2A A |
| Pressure Rating | 300.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Compressed Length | 41.875 INCHES NOMINAL IN |
| Extended Length | 76.375 INCHES NOMINAL IN |
| Design Characteristics | DOUBLE ACTING SINGLE CYLINDER |
| Port Thread Series Designator | NPT |
| First Piston Rod End Thread Quantity Per Inch | 16 |
| First Piston Rod End Style | EXTERNAL THREADED |
| Features Provided | CUSHIONED STROKE |
| Port Nominal Pipe Thread Size | 0.250 INCHES IN |
| First Piston Rod End Thread Series Designator | UNF |
| Bore Diameter | 2.500 INCHES NOMINAL IN |
| First Piston Rod End Thread Diameter | 0.750 INCHES NOMINAL IN |
| First End Outside Diameter | 0.750 INCHES NOMINAL IN |
| 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 |
|---|---|
| LD490347 | Naval Sea Systems Command (USA) |
| 2319708 | Naval Sea Systems Command (USA) |
| 1815322 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| N25S3450AB0300 | 3/9 Design control — primary reference Lehigh Fluid Power Inc |
| LD490347 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 2LA604 | D/9 Drawing number reference only Lehigh Fluid Power Inc |
| 1815322 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 3040-00-673-7810 is a Cylinder Assembly,actuating,line, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-673-7810 has 3 manufacturer part numbers on file: LD490347 (Naval Sea Systems Command), 2319708 (Naval Sea Systems Command), 1815322 (Naval Sea Systems Command).
Key specifications for LD490347: First Piston Rod End Thread Class: 2A A; Overall Height: 3.000 INCHES NOMINAL IN; Pressure Rating: 300.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Compressed Length: 41.875 INCHES NOMINAL IN. 14 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.