PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

203772Valve,check

Eaton Corp Dba Eaton Aerospace Jackson · NSN 4820-00-861-0288 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-861-0288 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-861-0288. Primary manufacturer part number: 203772.
Features
  • Valve,check — FSC 4820
  • Media for Which Designed: OIL, HYDRAULIC SINGLE RESPONSE
  • 1 verified cross-reference
  • Primary manufacturer: Eaton Corp Dba Eaton Aerospace Jackson
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Valve,check, cataloged under National Stock Number 4820-00-861-0288, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Eaton Corp Dba Eaton Aerospace Jackson. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-861-0288
Primary Part Number203772
Item NameValve,check
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEaton Corp Dba Eaton Aerospace Jackson
StatusACTIVE
Media for Which DesignedOIL, HYDRAULIC SINGLE RESPONSE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5998-00-520-2576 INTERCHANGEABLE
Circuit Card Assembly
5330-01-306-4870417518 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
Cross-Reference Index
Part NumberManufacturer
203772 PRIMARY Eaton Corp Dba Eaton Aerospace Jackson (USA)
Related Parts
5998-00-520-2576INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5330-01-306-4870INTERCHANGEABLE
SEAL,PLAIN ENCASED
417518

Frequently Asked Questions

What is NSN 4820-00-861-0288?

NSN 4820-00-861-0288 is a Valve,check, manufactured by Eaton Corp Dba Eaton Aerospace Jackson, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-861-0288?

NSN 4820-00-861-0288 has 1 cross-referenced part number: 203772 (Eaton Corp Dba Eaton Aerospace Jackson).

What NSN replaces 4820-00-861-0288?

There are 2 known substitutes for 4820-00-861-0288: 5998-00-520-2576, 5330-01-306-4870. Verify interchangeability with system specifications before substitution.

What are the specifications of 203772?

Key specifications for 203772: Media for Which Designed: OIL, HYDRAULIC SINGLE RESPONSE. 1 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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