The Piston,linear Actuating Cylinder, cataloged under National Stock Number 1650-00-313-4904, 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 Herco Aircraft , Inc.. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1650-00-313-4904 |
| Primary Part Number | 9-45640 |
| Item Name | Piston,linear Actuating Cylinder |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Herco Aircraft , Inc. |
| Status | ACTIVE |
| Outside Diameter | 1.122 INCHES NOMINAL IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 9-45640 | Herco Aircraft , Inc. (USA) |
| 9-45640 | Skyspares Parts Inc (USA) |
| 9-45640 | Beta Engineering, Inc. Dba Beta Engineering Inc (USA) |
| 9-45640 | Bertot Industries Inc (USA) |
| 9-45640 | Aeroparts Machining, Llc Dba Warnkes Machining Co Llc (USA) |
| 9-45640 | Wynnson Enterprises, Inc. (USA) |
| 9-45640 | Es3 Prime Logistics Group Inc Dba Es3 Plg (USA) |
| Reference | Meaning |
|---|---|
| 9-45640 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1650-00-313-4904 is a Piston,linear Actuating Cylinder, manufactured by Herco Aircraft , Inc., classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-313-4904 has 7 manufacturer part numbers on file: 9-45640 (Herco Aircraft , Inc.), 9-45640 (Skyspares Parts Inc), 9-45640 (Beta Engineering, Inc. Dba Beta Engineering Inc), 9-45640 (Bertot Industries Inc), 9-45640 (Aeroparts Machining, Llc Dba Warnkes Machining Co Llc) and 2 more.
1 possible match (shared part number, not a government interchangeability claim): 2530-01-558-4438. Verify interchangeability with system specifications before substitution.
Key specifications for 9-45640: Outside Diameter: 1.122 INCHES NOMINAL IN; Overall Length: 13.300 INCHES NOMINAL IN; Special Features: MATERIAL PER MIL-S-5000; 7/8-14UNF-3B THREADS; 0.410 TO 0.415 SEAL GROOVE WIDTH, 0.184IN. SEAL GROOVE DEPTH IN; Material: STEEL. 2 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.