The Sleeve,piston Lock, cataloged under National Stock Number 1650-00-844-7532, 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-844-7532 |
| Primary Part Number | A51H20529-11 |
| Item Name | Sleeve,piston Lock |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | CRES; PASSIVATED; 2.375 IN. LG; 1.443 IN. DIA; 1.188 IN. DIA BORE; W/4 HOLES 0.160 IN. DIA,90 DEG APART IN |
| 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 |
|---|---|
| A51H20529-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| A51H20529-11 | Kell-Strom Tool International, Inc. (USA) |
| Reference | Meaning |
|---|---|
| A51H20529 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
| A51H20529-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51H20529-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 1650-00-844-7532 is a Sleeve,piston Lock, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-844-7532 has 2 manufacturer part numbers on file: A51H20529-11 (Northrop Grumman Systems Corporation), A51H20529-11 (Kell-Strom Tool International, Inc.).
Key specifications for A51H20529-11: General Characteristics Item Description: CRES; PASSIVATED; 2.375 IN. LG; 1.443 IN. DIA; 1.188 IN. DIA BORE; W/4 HOLES 0.160 IN. DIA,90 DEG APART IN; End Item Identification: GRUMMAN MODEL F-14A AIRCRAFT A. 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 1650-00-844-7532 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.