The Cylinder Assembly,actuating,line, cataloged under National Stock Number 3040-01-138-2012, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-138-2012 |
| 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 |
| Pressure Rating | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Compressed Length | 16.625 INCHES NOMINAL IN |
| Temp Rating | -10.0 FAHRENHEIT AND 165.0 FAHRENHEIT DEGF |
| Extended Length | 25.125 INCHES NOMINAL IN |
| Design Characteristics | SINGLE ACTING SINGLE 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 |
| Features Provided | CLEVIS PIN AND CUSHIONED STROKE |
| Port Thread Quantity Per Inch | UNABLE TO DECODE |
| Port Thread Diameter | UNABLE TO DECODE |
| Port Style | UNABLE TO DECODE |
| First Piston Rod End Thread Series Designator | UNABLE TO DECODE |
| Integral Valve Operation Method | HYDRAULIC |
| Bore Diameter | 2.500 INCHES NOMINAL IN |
| Mounting Type and Location | FORK 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 |
|---|---|
| AF136616-C | 3/2 Design control — primary reference U.S. Government activity |
| 2-50CBB-24LTS14CX8-500 | 5/9 Secondary reference U.S. Government activity |
| 2 1/2CBB-2HLTS14CX8 1/2 | 5/9 Secondary reference U.S. Government activity |
NSN 3040-01-138-2012 is a Cylinder Assembly,actuating,line, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3040-01-237-0384. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-138-2012: First Piston Rod End Thread Class: UNABLE TO DECODE; Overall Height: 3.500 INCHES NOMINAL IN; Pressure Rating: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Compressed Length: 16.625 INCHES NOMINAL IN. 21 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.