PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

304-3/4Disk,valve

Jenkins Bros · NSN 4820-00-640-5808 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-640-5808 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-640-5808. Primary manufacturer part number: 304-3/4.
Features
  • Disk,valve — FSC 4820
  • Inside Diameter: 0.400 INCHES NOMINAL IN
  • Outside Diameter: 1.084 INCHES NOMINAL IN
  • Style Designator: PLAIN
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE
  • 3 verified cross-references
  • Primary manufacturer: Jenkins Bros
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Plastic Polytetrafluoroethylene construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-00-640-5808, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Jenkins Bros. 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-640-5808
Primary Part Number304-3/4
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerJenkins Bros
StatusACTIVE
Inside Diameter0.400 INCHES NOMINAL IN
Outside Diameter1.084 INCHES NOMINAL IN
Style DesignatorPLAIN
MaterialPLASTIC POLYTETRAFLUOROETHYLENE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3110-00-067-9990137987-02 INTERCHANGEABLE
Bearing,ball,annular
Mpb Corp Div Timken Super Precision
3020-00-256-346330434 INTERCHANGEABLE
Gear,worm
Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
4820-00-289-08531226 INTERCHANGEABLE
Valve,safety Relief
Dante Valve Company
4530-00-472-6201F80PLP3GPH45 INTERCHANGEABLE
Nozzle,oil Burner,pressure Atomi
Monarch Mfg Works Inc
1630-00-769-4710304-34 INTERCHANGEABLE
Parts Kit,wheel,ove
Goodrich Corporation
4310-01-280-905530434 INTERCHANGEABLE
Diaphragm,pump,special Shaped
W.w. Grainger, Inc. Div Government Sales Division
7490-01-559-5385 INTERCHANGEABLE
Shredding Machine,paper
Cross-Reference Index
Part NumberManufacturer
304-3/4 Jenkins Bros (USA)
NAP48PC35 Jenkins Bros (USA)
119AS3-4 Jenkins Bros (USA)
Related Parts
3110-00-067-9990INTERCHANGEABLE
BEARING,BALL,ANNULAR
137987-02
3020-00-256-3463INTERCHANGEABLE
GEAR,WORM
30434
4820-00-289-0853INTERCHANGEABLE
VALVE,SAFETY RELIEF
1226
4530-00-472-6201INTERCHANGEABLE
NOZZLE,OIL BURNER,PRESSURE ATOMI
F80PLP3GPH45
1630-00-769-4710INTERCHANGEABLE
PARTS KIT,WHEEL,OVE
304-34
4310-01-280-9055INTERCHANGEABLE
DIAPHRAGM,PUMP,SPECIAL SHAPED
30434
7490-01-559-5385INTERCHANGEABLE
SHREDDING MACHINE,PAPER

Frequently Asked Questions

What is NSN 4820-00-640-5808?

NSN 4820-00-640-5808 is a Disk,valve, manufactured by Jenkins Bros, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-640-5808?

NSN 4820-00-640-5808 has 3 cross-referenced part numbers: 304-3/4 (Jenkins Bros), NAP48PC35 (Jenkins Bros), 119AS3-4 (Jenkins Bros).

What NSN replaces 4820-00-640-5808?

There are 7 known substitutes for 4820-00-640-5808: 3110-00-067-9990, 3020-00-256-3463, 4820-00-289-0853 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 304-3/4?

Key specifications for 304-3/4: Inside Diameter: 0.400 INCHES NOMINAL IN; Outside Diameter: 1.084 INCHES NOMINAL IN; Style Designator: PLAIN; Material: PLASTIC POLYTETRAFLUOROETHYLENE. 5 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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