The Retainer,ball Piston, cataloged under National Stock Number 1650-00-970-9936, 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 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-970-9936 |
| Primary Part Number | 128HM10343-1 |
| Item Name | Retainer,ball Piston |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | CRES,QQ-S-763,CL440C;1.689 IN.OD;0.890 IN.LG;1.523 IN.MAJOR ID,1.325 IN.MINOR ID;6 DRILLED HOLES 0.158 IN.DIA EQUALLY SPACED ON PERIPHERY,0.296 IN.LG CTR TO EDGE OF ITEM 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 |
|---|---|
| GSS7021 | Northrop Grumman Systems Corporation (USA) |
| GSS5100E | Northrop Grumman Systems Corporation (USA) |
| 128HM10343-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 128HM10343-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 1650-00-970-9936 is a Retainer,ball Piston, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-970-9936 has 3 manufacturer part numbers on file: GSS7021 (Northrop Grumman Systems Corporation), GSS5100E (Northrop Grumman Systems Corporation), 128HM10343-1 (Northrop Grumman Systems Corporation).
Key specifications for 128HM10343-1: General Characteristics Item Description: CRES,QQ-S-763,CL440C;1.689 IN.OD;0.890 IN.LG;1.523 IN.MAJOR ID,1.325 IN.MINOR ID;6 DRILLED HOLES 0.158 IN.DIA EQUALLY SPACED ON PERIPHERY,0.296 IN.LG CTR TO EDGE OF ITEM 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 1650-00-970-9936 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.