The Cylinder Assembly,actuating,line, cataloged under National Stock Number 3040-01-422-7789, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-422-7789 |
| Item Name | Cylinder Assembly,actuating,line |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| First Piston Rod End Thread Class | UNABLE TO DECODE |
| Mounting Facility Diameter | 0.562 INCHES NOMINAL IN |
| Design Characteristics | DOUBLE ACTING TWIN CYLINDER |
| Port Thread Series Designator | UNABLE TO DECODE |
| First Piston Rod End Thread Quantity Per Inch | UNABLE TO DECODE |
| First End External Thread Length | UNABLE TO DECODE |
| First Piston Rod End Style | UNABLE TO DECODE |
| Port Thread Class | UNABLE TO DECODE |
| Port Thread Quantity Per Inch | UNABLE TO DECODE |
| Body Material | STEEL |
| Port Thread Diameter | UNABLE TO DECODE |
| Port Style | UNABLE TO DECODE |
| First Piston Rod End Thread Series Designator | UNABLE TO DECODE |
| Mounting Provision for Which Designed | UNTHREADED MOUNTING HOLES |
| Integral Valve Operation Method | HYDRAULIC |
| Bore Diameter | 2.000 INCHES NOMINAL IN |
| Mounting Type and Location | FLANGE CYLINDER HEAD END |
| First Piston Rod End Thread Diameter | UNABLE TO DECODE |
| First End Outside Diameter | UNABLE TO DECODE |
| 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 |
|---|---|
| EE110723A | 3/2 Design control — primary reference U.S. Government activity |
| 2.00CKJB2HLTVS14A/14AC6 | 5/9 Secondary reference U.S. Government activity |
NSN 3040-01-422-7789 is a Cylinder Assembly,actuating,line, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-422-7790, 3040-01-422-7792. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-422-7789: First Piston Rod End Thread Class: UNABLE TO DECODE; Mounting Facility Diameter: 0.562 INCHES NOMINAL IN; Design Characteristics: DOUBLE ACTING TWIN CYLINDER; Port Thread Series Designator: UNABLE TO DECODE. 19 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.