PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

43304Disk,valve

Eaton Aerospace Llc Dba Eaton Aerospace Jackson · NSN 4820-01-373-0722 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-373-0722 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-373-0722. Primary manufacturer part number: 43304.
Features
  • Disk,valve — FSC 4820
  • Material: STEEL COMP 440C
  • Outside Diameter: 0.395 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
  • Material Document and Classification: QQ-S-763, CLASS 440C, COND A FED SPEC SINGLE MATERIAL RESPONSE
  • Inside Diameter: 0.075 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
  • 1 verified cross-reference
  • Primary manufacturer: Eaton Aerospace Llc Dba Eaton Aerospace Jackson
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 440c construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-373-0722, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Eaton Aerospace Llc Dba Eaton Aerospace Jackson. Government technical data includes 4 verified specifications, 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-373-0722
Primary Part Number43304
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEaton Aerospace Llc Dba Eaton Aerospace Jackson
StatusACTIVE
MaterialSTEEL COMP 440C
Outside Diameter0.395 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
Material Document and ClassificationQQ-S-763, CLASS 440C, COND A FED SPEC SINGLE MATERIAL RESPONSE
Inside Diameter0.075 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3110-00-144-8806 INTERCHANGEABLE
Bearing,ball,annular
5330-01-299-818545679 INTERCHANGEABLE
Parts Kit,seal Replacement,mecha
Bourns Inc
1680-01-312-622043304 INTERCHANGEABLE
Regulator Assembly,coupling
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
Cross-Reference Index
Part NumberManufacturer
43304 PRIMARY Eaton Aerospace Llc Dba Eaton Aerospace Jackson (USA)
Related Parts
3110-00-144-8806INTERCHANGEABLE
BEARING,BALL,ANNULAR
5330-01-299-8185INTERCHANGEABLE
PARTS KIT,SEAL REPLACEMENT,MECHA
45679
1680-01-312-6220INTERCHANGEABLE
REGULATOR ASSEMBLY,COUPLING
43304

Frequently Asked Questions

What is NSN 4820-01-373-0722?

NSN 4820-01-373-0722 is a Disk,valve, manufactured by Eaton Aerospace Llc Dba Eaton Aerospace Jackson, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-373-0722?

NSN 4820-01-373-0722 has 1 cross-referenced part number: 43304 (Eaton Aerospace Llc Dba Eaton Aerospace Jackson).

What NSN replaces 4820-01-373-0722?

There are 3 known substitutes for 4820-01-373-0722: 3110-00-144-8806, 5330-01-299-8185, 1680-01-312-6220. Verify interchangeability with system specifications before substitution.

What are the specifications of 43304?

Key specifications for 43304: Material: STEEL COMP 440C; Outside Diameter: 0.395 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN; Overall Height: 1.168 INCHES MINIMUM AND 1.172 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-763, CLASS 440C, COND A FED SPEC SINGLE MATERIAL RESPONSE. 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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