PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

23121Piston and Seat Assembly

Hamilton Sundstrand Corporation Dba Collins Aerospace · NSN 1650-00-922-8775 · FSC 1650 · No Item Name Available
Verified by PartsTable
NSN 1650-00-922-8775 — this item is cataloged by the U.S. Government under National Stock Number 1650-00-922-8775. Primary manufacturer part number: 23121.
Features
  • Piston and Seat Assembly — FSC 1650
  • 4 verified cross-references
  • Primary manufacturer: Hamilton Sundstrand Corporation Dba Collins Aerospace
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Piston and Seat Assembly, cataloged under National Stock Number 1650-00-922-8775, is classified within Federal Supply Class 1650 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NamePiston and Seat Assembly
FSC / FSG1650 — No Item Name Available (FSG 16)
ManufacturersHamilton Sundstrand Corporation Dba Collins Aerospace (CAGE 73030); United Technologies Corp Hamilton Sundstrand Corp (CAGE 07148)
Technical Specifications
ParameterValue
NSN1650-00-922-8775
Primary Part Number23121
Item NamePiston and Seat Assembly
FSC / FSG1650 / 16 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation Dba Collins Aerospace
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5845-00-346-326622629 INTERCHANGEABLE
Hydrophone Subassembly,sonar
L3harris Technologies, Inc. Div Space and Airborne Systems
2930-00-379-009423121 INTERCHANGEABLE
Pump,cooling System,engine
Industrial Technologies and Services Llc
5945-00-567-52402-262-9 INTERCHANGEABLE
Solenoid
Parker-Hannifin Corporation Dba Pneutronics
5935-00-683-5095DA20961 INTERCHANGEABLE
Backshell,electrical Connector
Itt Cannon Llc
3040-00-876-076523121 INTERCHANGEABLE
Gearshaft,spur
Hydro-Aire Aerospace Corp
4330-01-028-3396600377C INTERCHANGEABLE
Filter Element,fluid
Admiral Filter Company Llc
5962-01-136-7071HI-1-1818A-2 INTERCHANGEABLE
Microcircuit,digital-Linear
Renesas Electronics America Inc
5340-01-139-019322629 INTERCHANGEABLE
Handle Bracket
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
5310-01-215-509622629 INTERCHANGEABLE
Nut,plain,hexagon
Industrial Technologies and Services Llc
4320-01-417-583123121 INTERCHANGEABLE
Piston,hydraulic Motor-Pump
Parker Hannifin Corporation Div Hydraulic Systems Division
Cross-Reference Index
Part NumberManufacturer
23121 PRIMARY Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
22629 Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
22629 United Technologies Corp Hamilton Sundstrand Corp (USA)
23121 United Technologies Corp Hamilton Sundstrand Corp (USA)
Related Parts
5845-00-346-3266INTERCHANGEABLE
HYDROPHONE SUBASSEMBLY,SONAR
22629
2930-00-379-0094INTERCHANGEABLE
PUMP,COOLING SYSTEM,ENGINE
23121
5945-00-567-5240INTERCHANGEABLE
SOLENOID
2-262-9
5935-00-683-5095INTERCHANGEABLE
BACKSHELL,ELECTRICAL CONNECTOR
DA20961
3040-00-876-0765INTERCHANGEABLE
GEARSHAFT,SPUR
23121
4330-01-028-3396INTERCHANGEABLE
FILTER ELEMENT,FLUID
600377C
5962-01-136-7071INTERCHANGEABLE
MICROCIRCUIT,DIGITAL-LINEAR
HI-1-1818A-2
5340-01-139-0193INTERCHANGEABLE
HANDLE BRACKET
22629
5310-01-215-5096INTERCHANGEABLE
NUT,PLAIN,HEXAGON
22629
4320-01-417-5831INTERCHANGEABLE
PISTON,HYDRAULIC MOTOR-PUMP
23121
3120-01-469-0380INTERCHANGEABLE
BUSHING,SLEEVE
23121

Frequently Asked Questions

What is NSN 1650-00-922-8775?

NSN 1650-00-922-8775 is a Piston and Seat Assembly, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 1650 (No Item Name Available). Status: active.

What are the part numbers for NSN 1650-00-922-8775?

NSN 1650-00-922-8775 has 4 cross-referenced part numbers: 23121 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 22629 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 22629 (United Technologies Corp Hamilton Sundstrand Corp), 23121 (United Technologies Corp Hamilton Sundstrand Corp).

What NSN replaces 1650-00-922-8775?

There are 11 known substitutes for 1650-00-922-8775: 5845-00-346-3266, 2930-00-379-0094, 5945-00-567-5240 and 8 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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