PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

221010Disk,valve

Eaton Corporation Dba Eaton Inoac · NSN 4820-01-652-3522 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-652-3522 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-652-3522. Primary manufacturer part number: 221010.
Features
  • Disk,valve — FSC 4820
  • Style Designator: SOLID
  • 1 verified cross-reference
  • Primary manufacturer: Eaton Corporation Dba Eaton Inoac
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-652-3522, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Eaton Corporation Dba Eaton Inoac. 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-652-3522
Primary Part Number221010
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEaton Corporation Dba Eaton Inoac
StatusACTIVE
Style DesignatorSOLID
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5975-00-280-3450 INTERCHANGEABLE
Box Connector,electrical
5315-00-336-12151A7146 INTERCHANGEABLE
Pin,straight,headed
Napco International Llc Dba Napco International Inc
5330-00-341-9240221-010 INTERCHANGEABLE
Seal
Euramco Safety Inc
3820-00-376-8484M22-1010 INTERCHANGEABLE
Spacer,air Hammer
Dresser Industries Inc Leroi Div
6515-01-056-8336 INTERCHANGEABLE
Tourniquet,nonpneumatic
6515-01-146-779422101100 INTERCHANGEABLE
Tourniquet,nonpneumatic
Propper Manufacturing Company, Inc. Div Propper Manufacturing Company
Cross-Reference Index
Part NumberManufacturer
221010 PRIMARY Eaton Corporation Dba Eaton Inoac (USA)
Related Parts
5975-00-280-3450INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5315-00-336-1215INTERCHANGEABLE
PIN,STRAIGHT,HEADED
1A7146
5330-00-341-9240INTERCHANGEABLE
SEAL
221-010
3820-00-376-8484INTERCHANGEABLE
SPACER,AIR HAMMER
M22-1010
6515-01-056-8336INTERCHANGEABLE
TOURNIQUET,NONPNEUMATIC
6515-01-146-7794INTERCHANGEABLE
TOURNIQUET,NONPNEUMATIC
22101100

Frequently Asked Questions

What is NSN 4820-01-652-3522?

NSN 4820-01-652-3522 is a Disk,valve, manufactured by Eaton Corporation Dba Eaton Inoac, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-652-3522?

NSN 4820-01-652-3522 has 1 cross-referenced part number: 221010 (Eaton Corporation Dba Eaton Inoac).

What NSN replaces 4820-01-652-3522?

There are 6 known substitutes for 4820-01-652-3522: 5975-00-280-3450, 5315-00-336-1215, 5330-00-341-9240 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 221010?

Key specifications for 221010: Style Designator: SOLID; End Item Identification: NOZZLE ASSEMBLY, D3, UNIVERSAL; R21FMSPA-FS00;; Part Name Assigned by Controlling Agency: POPPET. 3 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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