The Cylinder Assembly,actuating,line, cataloged under National Stock Number 3040-01-342-8761, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lynair Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-342-8761 |
| Primary Part Number | HB-2-1/2 04-6-1/2 |
| Item Name | Cylinder Assembly,actuating,line |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lynair Inc |
| Status | ACTIVE |
| First Piston Rod End Thread Class | UNABLE TO DECODE |
| Pressure Rating | 645.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Compressed Length | 13.880 INCHES NOMINAL IN |
| Seat Angle in Deg | UNABLE TO DECODE |
| Extended Length | 20.380 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 Piston Rod End Style | UNABLE TO DECODE |
| Body Material | STEEL |
| Port Nominal Pipe Thread Size | 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 |
| 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 |
|---|---|
| HB-2-1/2 04-6-1/2 | Lynair Inc (USA) |
| Reference | Meaning |
|---|---|
| 2-1/2BB-2H-U19A-6-1/2 | 3/9 Design control — primary reference U.S. Government activity |
| TA1053A308 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 3040-01-342-8761 is a Cylinder Assembly,actuating,line, manufactured by Lynair Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-342-8761 has 1 manufacturer part number on file: HB-2-1/2 04-6-1/2 (Lynair Inc).
Key specifications for HB-2-1/2 04-6-1/2: First Piston Rod End Thread Class: UNABLE TO DECODE; Overall Height: 3.500 INCHES NOMINAL IN; Pressure Rating: 645.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Compressed Length: 13.880 INCHES NOMINAL IN. 17 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.