The Cylinder Assembly,actuating,line, cataloged under National Stock Number 3040-01-419-3655, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Sheffer Corp. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-419-3655 |
| Primary Part Number | 2-1/2 HH-A231 |
| Item Name | Cylinder Assembly,actuating,line |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Sheffer Corp |
| Status | ACTIVE |
| First Piston Rod End Thread Class | UNABLE TO DECODE |
| Mounting Facility Diameter | 0.750 INCHES NOMINAL IN |
| Compressed Length | 16.578 INCHES NOMINAL IN |
| Extended Length | 20.453 INCHES NOMINAL IN |
| Design Characteristics | SINGLE ACTING SINGLE CYLINDER |
| First Piston Rod End Thread Quantity Per Inch | UNABLE TO DECODE |
| First End External Thread Length | UNABLE TO DECODE |
| Mounting Facility Length | 1.250 INCHES NOMINAL IN |
| First Piston Rod End Style | UNABLE TO DECODE |
| Body Material | STEEL |
| First Piston Rod End Thread Series Designator | UNABLE TO DECODE |
| Mounting Provision for Which Designed | PIN(S) |
| Integral Valve Operation Method | HYDRAULIC |
| Bore Diameter | 2.500 INCHES NOMINAL IN |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 2-1/2 HH-A231 PRIMARY | Sheffer Corp (USA) |
| MDL 2-1/2 HH-A231 PRIMARY | Sheffer Corp (USA) |
NSN 3040-01-419-3655 is a Cylinder Assembly,actuating,line, manufactured by Sheffer Corp, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-419-3655 has 2 manufacturer part numbers on file: 2-1/2 HH-A231 (Sheffer Corp), MDL 2-1/2 HH-A231 (Sheffer Corp).
Key specifications for 2-1/2 HH-A231: First Piston Rod End Thread Class: UNABLE TO DECODE; Mounting Facility Diameter: 0.750 INCHES NOMINAL IN; Overall Height: 3.500 INCHES NOMINAL IN; Compressed Length: 16.578 INCHES NOMINAL IN. 16 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.