PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4086Disk,valve

Circor Aerospace, Inc. Dba Circor Aerospace Inc · NSN 4820-00-018-0425 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-018-0425 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-018-0425. Primary manufacturer part number: 4086.
Features
  • Disk,valve — FSC 4820
  • Material: RUBBER SYNTHETIC
  • Style Designator: PLAIN
  • Inside Diameter: 0.250 INCHES NOMINAL IN
  • Outside Diameter: 0.750 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Circor Aerospace, Inc. Dba Circor Aerospace Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber Synthetic construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-00-018-0425, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Circor Aerospace, Inc. Dba Circor Aerospace Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-018-0425
Primary Part Number4086
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCircor Aerospace, Inc. Dba Circor Aerospace Inc
StatusACTIVE
MaterialRUBBER SYNTHETIC
Style DesignatorPLAIN
Inside Diameter0.250 INCHES NOMINAL IN
Outside Diameter0.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5120-00-221-796141H1504-350 INTERCHANGEABLE
Handle,socket Wrench
Marine Corps
9540-00-261-5112 INTERCHANGEABLE
Angle,structural
3040-00-343-6621 INTERCHANGEABLE
Shaft,drive,flexible
5999-00-658-9654341004 INTERCHANGEABLE
Shielding Gasket,electronic
Lockheed Martin Corporation Div Rms - Mitchel Field
6210-00-783-77614086 INTERCHANGEABLE
Lens,light
L3harris Technologies, Inc. Div Space and Airborne Systems
5310-00-898-335311154443-2 INTERCHANGEABLE
Nut,plain,knurled
Us Army Aviation and Missile Command
5950-00-941-798111586607 INTERCHANGEABLE
Transformer,radio Frequency
U S Army Tank Automotive Command Amsta-Im-Mm
4730-01-054-38364086 INTERCHANGEABLE
Elbow,pipe to Tube
Brinkley Technology Group Llc Dba Hercules Manufacturing
5930-01-296-66885191042-1 INTERCHANGEABLE
Boot,dust and Moisture Seal
Naval Sea Systems Command
4730-01-324-51354086 INTERCHANGEABLE
Nozzle,spray,fluid-Emulsion
Smithco, Inc.
Cross-Reference Index
Part NumberManufacturer
4086 Atkomatic Valve Co Inc (USA)
4086 PRIMARY Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
Related Parts
5120-00-221-7961INTERCHANGEABLE
HANDLE,SOCKET WRENCH
41H1504-350
9540-00-261-5112INTERCHANGEABLE
ANGLE,STRUCTURAL
3040-00-343-6621INTERCHANGEABLE
SHAFT,DRIVE,FLEXIBLE
5999-00-658-9654INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
341004
6210-00-783-7761INTERCHANGEABLE
LENS,LIGHT
4086
5310-00-898-3353INTERCHANGEABLE
NUT,PLAIN,KNURLED
11154443-2
5950-00-941-7981INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
11586607
4730-01-054-3836INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4086
5930-01-296-6688INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
5191042-1
4730-01-324-5135INTERCHANGEABLE
NOZZLE,SPRAY,FLUID-EMULSION
4086

Frequently Asked Questions

What is NSN 4820-00-018-0425?

NSN 4820-00-018-0425 is a Disk,valve, manufactured by Circor Aerospace, Inc. Dba Circor Aerospace Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-018-0425?

NSN 4820-00-018-0425 has 2 cross-referenced part numbers: 4086 (Atkomatic Valve Co Inc), 4086 (Circor Aerospace, Inc. Dba Circor Aerospace Inc).

What NSN replaces 4820-00-018-0425?

There are 10 known substitutes for 4820-00-018-0425: 5120-00-221-7961, 9540-00-261-5112, 3040-00-343-6621 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4086?

Key specifications for 4086: Material: RUBBER SYNTHETIC; Overall Height: 0.219 INCHES NOMINAL IN; Style Designator: PLAIN; Inside Diameter: 0.250 INCHES NOMINAL IN. 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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