The Cylinder,actuating,linear, cataloged under National Stock Number 1650-00-326-8113, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-326-8113 |
| Primary Part Number | S6165-61521-004 |
| Item Name | Cylinder,actuating,linear |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| FSC Application Data | SERVOCYLINDER,HYDRAULIC,CH3B/C/E |
| Overall Diameter | 3.066 INCHES NOMINAL IN |
| Body Outside Diameter | 1.938 INCHES NOMINAL IN |
| Mounting Provision Arrangement Style | THREE HOLE TRIANGULAR |
| Longest Vertical Distance Between Mounting Centers | 1.028 INCHES MINIMUM AND 1.034 INCHES MAXIMUM IN |
| Shortest Horizontal Distance Between Mounting Centers | 1.028 INCHES MINIMUM AND 1.034 INCHES MAXIMUM IN |
| Bore Diameter | 1.594 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING BODY |
| Mounting Type and Location | FLANGE CYLINDER HEAD END |
| Mounting Provision | UNTHREADED MOUNTING HOLES |
| Longest Horizontal Distance Between Mounting Centers | 2.059 INCHES MINIMUM AND 2.065 INCHES MAXIMUM IN |
| 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 |
|---|---|
| S6165-61521-004 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| S6165-61521-4 | Rotair Aerospace Corp (USA) |
| Reference | Meaning |
|---|---|
| S6165-61521-4 | 5/9 Secondary reference Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 1650-00-326-8113 is a Cylinder,actuating,linear, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-326-8113 has 2 manufacturer part numbers on file: S6165-61521-004 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), S6165-61521-4 (Rotair Aerospace Corp).
Key specifications for S6165-61521-004: FSC Application Data: SERVOCYLINDER,HYDRAULIC,CH3B/C/E; Overall Diameter: 3.066 INCHES NOMINAL IN; Body Outside Diameter: 1.938 INCHES NOMINAL IN; Mounting Provision Arrangement Style: THREE HOLE TRIANGULAR. 11 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.