PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21262Piston,valve

Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace · NSN 4820-01-419-1678 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-419-1678 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-419-1678. Primary manufacturer part number: 21262.
Features
  • Piston,valve — FSC 4820
  • Valve Type for Which Designed: CHECK
  • Material: STEEL CORROSION RESISTING
  • Valve Design Control Activity: 78062
  • Valve Model Number for Which Designed: 21262
  • 3 verified cross-references
  • Primary manufacturer: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Piston,valve, cataloged under National Stock Number 4820-01-419-1678, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-419-1678
Primary Part Number21262
Item NamePiston,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
StatusACTIVE
Valve Type for Which DesignedCHECK
MaterialSTEEL CORROSION RESISTING
Valve Design Control Activity78062
Valve Model Number for Which Designed21262
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5895-00-386-706131832 INTERCHANGEABLE
Phase Equalizer
Eaton Corp Information Management Systems Div Microwave Components
5305-00-422-404321262 INTERCHANGEABLE
Setscrew
Raytheon Company Dba Raytheon Co
5975-00-591-19968247-22-6 INTERCHANGEABLE
Box Connector,electrical
Chief of Engineers Dept of Army
5940-00-642-0039896574 INTERCHANGEABLE
Terminal,lug
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
1660-00-762-015021262 INTERCHANGEABLE
Ratchet,single
Hamilton Sundstrand Corporation Dba Collins Aerospace
5330-00-901-074921262 INTERCHANGEABLE
Seal,piston
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
3020-01-064-440421262-0001 INTERCHANGEABLE
Pulley,timing Belt
Bae Systems Information & Electronic Systems Integration Inc.
6210-01-179-7933318248-10 INTERCHANGEABLE
Light,indicator
Honeywell International Inc Div Environmental Systems & Services
6625-01-228-184621262 INTERCHANGEABLE
Converter,signal Data
Mirion Technologies (canberra), Inc.
3010-01-257-071621262 INTERCHANGEABLE
Clutch Assembly,friction
Calgon Carbon Uv Technologies Llc Dba Hyde Marine
Cross-Reference Index
Part NumberManufacturer
21262 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21262 FIND 10 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
31832 Canyon Engineering Products, Inc. (USA)
Related Parts
5895-00-386-7061INTERCHANGEABLE
PHASE EQUALIZER
31832
5305-00-422-4043INTERCHANGEABLE
SETSCREW
21262
5975-00-591-1996INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
8247-22-6
5940-00-642-0039INTERCHANGEABLE
TERMINAL,LUG
896574
1660-00-762-0150INTERCHANGEABLE
RATCHET,SINGLE
21262
5330-00-901-0749INTERCHANGEABLE
SEAL,PISTON
21262
3020-01-064-4404INTERCHANGEABLE
PULLEY,TIMING BELT
21262-0001
6210-01-179-7933INTERCHANGEABLE
LIGHT,INDICATOR
318248-10
6625-01-228-1846INTERCHANGEABLE
CONVERTER,SIGNAL DATA
21262
3010-01-257-0716INTERCHANGEABLE
CLUTCH ASSEMBLY,FRICTION
21262
4820-01-419-1612INTERCHANGEABLE
SLEEVE,DIRECTIONAL CONTROL LINEA
4820-01-419-1614INTERCHANGEABLE
SEAT,VALVE
31841

Frequently Asked Questions

What is NSN 4820-01-419-1678?

NSN 4820-01-419-1678 is a Piston,valve, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-419-1678?

NSN 4820-01-419-1678 has 3 cross-referenced part numbers: 21262 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21262 FIND 10 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 31832 (Canyon Engineering Products, Inc.).

What NSN replaces 4820-01-419-1678?

There are 12 known substitutes for 4820-01-419-1678: 5895-00-386-7061, 5305-00-422-4043, 5975-00-591-1996 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21262?

Key specifications for 21262: Valve Type for Which Designed: CHECK; End Item Identification: SEAWOLF CLASS SSN; Material: STEEL CORROSION RESISTING; Valve Design Control Activity: 78062. 5 total characteristics are documented in the Federal Logistics Information System.

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