The Cylinder Assembly,actuating,line, cataloged under National Stock Number 3040-01-425-6644, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-425-6644 |
| Item Name | Cylinder Assembly,actuating,line |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Pressure Rating | 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Design Characteristics | SINGLE ACTING SINGLE CYLINDER |
| Mounting Provision Arrangement Style | FOUR HOLE RECTANGULAR |
| First Piston Rod End Style | UNABLE TO DECODE |
| Longest Vertical Distance Between Mounting Centers | 1.630 INCHES NOMINAL IN |
| Body Material | STEEL |
| First Piston Rod End Thread Series Designator | UNABLE TO DECODE |
| Mounting Provision for Which Designed | THREADED MOUNTING HOLES AND UNTHREADED MOUNTING HOLES |
| Integral Valve Operation Method | HYDRAULIC |
| Bore Diameter | 1.500 INCHES NOMINAL IN |
| Mounting Type and Location | FLANGE CYLINDER HEAD END AND SCREW CYLINDER HEAD END AND SCREW PISTON ROD END |
| First End Outside Diameter | UNABLE TO DECODE |
| Longest Horizontal Distance Between Mounting Centers | 3.438 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 |
| Reference | Meaning |
|---|---|
| EE110823E | 3/2 Design control — primary reference U.S. Government activity |
| 1 1/2CFH2HKTVS13AC77 | 5/9 Secondary reference U.S. Government activity |
NSN 3040-01-425-6644 is a Cylinder Assembly,actuating,line, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 3040-01-426-0249, 3040-01-426-0252, 3040-01-426-0258. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-425-6644: Overall Height: 2.500 INCHES NOMINAL IN; Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Design Characteristics: SINGLE ACTING SINGLE CYLINDER; Mounting Provision Arrangement Style: FOUR HOLE RECTANGULAR. 13 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.