The Head,linear Actuating Cylinder, cataloged under National Stock Number 1650-00-844-9040, 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 Tens Machine Company, Inc. Dba Tens Machine Co Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-844-9040 |
| Primary Part Number | A51H30514-1 |
| Item Name | Head,linear Actuating Cylinder |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Tens Machine Company, Inc. Dba Tens Machine Co Inc |
| Status | ACTIVE |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A51H30514-1 | Tens Machine Company, Inc. Dba Tens Machine Co Inc (USA) |
| A51H30514-1 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems (USA) |
| A51H30514-1 | Capy Machine Shop Inc. Dba Capy Machine Shop Inc (USA) |
| Reference | Meaning |
|---|---|
| A51H30514 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
| A51H30514-1 | 5/9 Secondary reference Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport |
| A51H30514-1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| PLA51H30514 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
| A51H30514-1 | 5/9 Secondary reference Tek Precision Co Limited |
| A51H30514-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation |
NSN 1650-00-844-9040 is a Head,linear Actuating Cylinder, manufactured by Tens Machine Company, Inc. Dba Tens Machine Co Inc, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-844-9040 has 3 manufacturer part numbers on file: A51H30514-1 (Tens Machine Company, Inc. Dba Tens Machine Co Inc), A51H30514-1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems), A51H30514-1 (Capy Machine Shop Inc. Dba Capy Machine Shop Inc).
Key specifications for A51H30514-1: Overall Length: 7.115 INCHES MINIMUM AND 7.235 INCHES MAXIMUM IN; Overall Width: 4.781 INCHES MAXIMUM IN; Material: ALUMINUM ALLOY. 1 specification is 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 1650-00-844-9040 has DEMIL Code B. 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.