PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21201-1004-1Piston,valve

Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace · NSN 4820-01-417-9407 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-417-9407 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-417-9407. Primary manufacturer part number: 21201-1004-1.
Features
  • Piston,valve — FSC 4820
  • Material Document and Classification: ASTM-A582 ASSN STD SINGLE MATERIAL RESPONSE
  • Valve Design Control Activity: 78062
  • Valve Type for Which Designed: DIRECTIONAL CONTROL LINEAR
  • Material: STEEL COMP 416
  • 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 Comp 416 construction
General Description

The Piston,valve, cataloged under National Stock Number 4820-01-417-9407, 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 1 manufacturer, 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
NSN4820-01-417-9407
Primary Part Number21201-1004-1
Item NamePiston,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
StatusACTIVE
Material Document and ClassificationASTM-A582 ASSN STD SINGLE MATERIAL RESPONSE
Valve Design Control Activity78062
Valve Type for Which DesignedDIRECTIONAL CONTROL LINEAR
MaterialSTEEL COMP 416
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5975-00-267-277697T075 INTERCHANGEABLE
Coupling,electrical Conduit
Egs Electrical Group Appleton Div
5310-00-282-954221201 INTERCHANGEABLE
Nut,plain,hexagon
Dresser, Llc
5310-00-486-521421201 INTERCHANGEABLE
Nut,plain,hexagon
Falls Filtration Technologies, Inc.
2915-00-931-296521201 INTERCHANGEABLE
Cover,relief Valve
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4510-01-116-16192120-1 INTERCHANGEABLE
Holder,water Tumbler
Charles a Starr Company Inc Dba Charles a Starr Company Inc
3040-01-188-326121201 INTERCHANGEABLE
Weight,counterbalance
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
4720-01-246-804121201 INTERCHANGEABLE
Hose,preformed
Gates Corporation
5330-01-350-046721201 INTERCHANGEABLE
Gasket
Hf Scientific Inc.
4820-01-418-004321201-001 INTERCHANGEABLE
Valve,linear,directional Control
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
3040-01-424-261221201-1005-1 INTERCHANGEABLE
Shaft,shouldered
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Cross-Reference Index
Part NumberManufacturer
21201-1004-1 PRIMARY Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21201-ITEM 7 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21201 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
Related Parts
5975-00-267-2776INTERCHANGEABLE
COUPLING,ELECTRICAL CONDUIT
97T075
5310-00-282-9542INTERCHANGEABLE
NUT,PLAIN,HEXAGON
21201
5310-00-486-5214INTERCHANGEABLE
NUT,PLAIN,HEXAGON
21201
2915-00-931-2965INTERCHANGEABLE
COVER,RELIEF VALVE
21201
4510-01-116-1619INTERCHANGEABLE
HOLDER,WATER TUMBLER
2120-1
3040-01-188-3261INTERCHANGEABLE
WEIGHT,COUNTERBALANCE
21201
4720-01-246-8041INTERCHANGEABLE
HOSE,PREFORMED
21201
5330-01-350-0467INTERCHANGEABLE
GASKET
21201
4820-01-418-0043INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
21201-001
3040-01-424-2612INTERCHANGEABLE
SHAFT,SHOULDERED
21201-1005-1
2590-01-439-9430INTERCHANGEABLE
CAP,FILLER OPENING
2120-1
5360-01-624-4406INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
21-201

Frequently Asked Questions

What is NSN 4820-01-417-9407?

NSN 4820-01-417-9407 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 4820-01-417-9407?

NSN 4820-01-417-9407 has 3 cross-referenced part numbers: 21201-1004-1 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21201-ITEM 7 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21201 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).

What NSN replaces 4820-01-417-9407?

There are 12 known substitutes for 4820-01-417-9407: 5975-00-267-2776, 5310-00-282-9542, 5310-00-486-5214 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21201-1004-1?

Key specifications for 21201-1004-1: Material Document and Classification: ASTM-A582 ASSN STD SINGLE MATERIAL RESPONSE; Valve Design Control Activity: 78062; Special Features: FOR VALVE ASSEMBLY SZ 2; Valve Type for Which Designed: DIRECTIONAL CONTROL LINEAR. 6 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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