The Parts Kit,servo Cylinder, cataloged under National Stock Number 1650-00-006-4451, 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 Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1650-00-006-4451 |
| Primary Part Number | A51HGSK18-100 |
| Item Name | Parts Kit,servo Cylinder |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport |
| Status | ACTIVE |
| Component Quantity | 9 |
| Nonsupply Items and Quantities | 26512 A51H20111-11 RETAINER 2;26512 A51H20575-11 RETAINER 2;26512 A51H20576-11 DOWEL 4;26512 GF525DD1 FILTER 1;26512 GR540BK2 PISTON RINGS 2 |
| 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 |
|---|---|
| A51HGSK18-100 | Fluidonics Inc (USA) |
| A51HGSK18-100 PRIMARY | Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport (USA) |
| A51HGSK18-100 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems (USA) |
| Reference | Meaning |
|---|---|
| A51HGSK18-100 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51HGSK18-100 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
NSN 1650-00-006-4451 is a Parts Kit,servo Cylinder, manufactured by Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-006-4451 has 3 manufacturer part numbers on file: A51HGSK18-100 (Fluidonics Inc), A51HGSK18-100 (Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport), A51HGSK18-100 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems).
Key specifications for A51HGSK18-100: Component Quantity: 9; Nonsupply Items and Quantities: 26512 A51H20111-11 RETAINER 2;26512 A51H20575-11 RETAINER 2;26512 A51H20576-11 DOWEL 4;26512 GF525DD1 FILTER 1;26512 GR540BK2 PISTON RINGS 2. 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.