The Piston,ejector,inner, cataloged under National Stock Number 1680-00-009-3782, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-009-3782 |
| Primary Part Number | A51K56508-11 |
| Item Name | Piston,ejector,inner |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | CRES,PASSIVATED 2.635 IN. MIN,2.640 IN. MAX O/A DIA,1.926 IN. MIN,1.931 IN. MAX ID IN |
| 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 |
|---|---|
| A51K56508-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| A51K56508-11 | Capy Machine Shop Inc. Dba Capy Machine Shop Inc (USA) |
| Reference | Meaning |
|---|---|
| A51K56508-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51K56508-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 1680-00-009-3782 is a Piston,ejector,inner, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-009-3782 has 2 manufacturer part numbers on file: A51K56508-11 (Northrop Grumman Systems Corporation), A51K56508-11 (Capy Machine Shop Inc. Dba Capy Machine Shop Inc).
Key specifications for A51K56508-11: General Characteristics Item Description: CRES,PASSIVATED 2.635 IN. MIN,2.640 IN. MAX O/A DIA,1.926 IN. MIN,1.931 IN. MAX ID IN. 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 1680-00-009-3782 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.