PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21349-1010-1Piston,valve

Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace · NSN 4820-01-495-3425 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-495-3425 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-495-3425. Primary manufacturer part number: 21349-1010-1.
Features
  • Piston,valve — FSC 4820
  • Material: STEEL CORROSION RESISTING
  • Valve Design Control Activity: 78062
  • 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 4820-01-495-3425, 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 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-495-3425
Primary Part Number21349-1010-1
Item NamePiston,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
StatusACTIVE
MaterialSTEEL CORROSION RESISTING
Valve Design Control Activity78062
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5961-01-125-51912N5988 INTERCHANGEABLE
Transistor
Texas Instruments Incorporated
5305-01-159-655221809 INTERCHANGEABLE
Screw,externally Relieved Body
Bradford Vibrators Co the
5950-01-210-109921809 INTERCHANGEABLE
Transformer,power
Westerbeke Corporation
4810-01-492-021021065-004 INTERCHANGEABLE
Valve,ball
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4730-01-517-0500 INTERCHANGEABLE
Elbow,tube
Cross-Reference Index
Part NumberManufacturer
21809 FIND 4 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21349-1010-1 PRIMARY Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21809 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
Related Parts
5961-01-125-5191INTERCHANGEABLE
TRANSISTOR
2N5988
5305-01-159-6552INTERCHANGEABLE
SCREW,EXTERNALLY RELIEVED BODY
21809
5950-01-210-1099INTERCHANGEABLE
TRANSFORMER,POWER
21809
4810-01-492-0210INTERCHANGEABLE
VALVE,BALL
21065-004
4730-01-517-0500INTERCHANGEABLE
ELBOW,TUBE

Frequently Asked Questions

What is NSN 4820-01-495-3425?

NSN 4820-01-495-3425 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 4820-01-495-3425?

NSN 4820-01-495-3425 has 3 cross-referenced part numbers: 21809 FIND 4 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21349-1010-1 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21809 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).

What NSN replaces 4820-01-495-3425?

There are 5 known substitutes for 4820-01-495-3425: 5961-01-125-5191, 5305-01-159-6552, 5950-01-210-1099 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21349-1010-1?

Key specifications for 21349-1010-1: Material: STEEL CORROSION RESISTING; Valve Design Control Activity: 78062. 2 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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