The Piston,linear Actuating Cylinder, cataloged under National Stock Number 1650-00-971-3140, 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 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-971-3140 |
| Primary Part Number | 128HM10137-1 |
| Item Name | Piston,linear Actuating 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 |
| Outside Diameter | 2.937 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 128HM10137-1 PRIMARY | Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport (USA) |
| 128HM10137-1 | Northrop Grumman Systems Corporation (USA) |
| 128HM10137-1 | Northrop Grumman Systems Corporation Div Northrop Grumman Aeronautics Systems (USA) |
| 128HM10137-1 | Northrop Grumman Systems Corporation (USA) |
NSN 1650-00-971-3140 is a Piston,linear Actuating 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 1650-00-971-3140 has 4 manufacturer part numbers on file: 128HM10137-1 (Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport), 128HM10137-1 (Northrop Grumman Systems Corporation), 128HM10137-1 (Northrop Grumman Systems Corporation Div Northrop Grumman Aeronautics Systems), 128HM10137-1 (Northrop Grumman Systems Corporation).
Key specifications for 128HM10137-1: Outside Diameter: 2.937 INCHES NOMINAL IN; Special Features: 2.687 IN.DIA 2ND END IN; Material: ALUMINUM ALLOY. 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.
NSN 1650-00-971-3140 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.