PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A18596Disk,valve

Circor Aerospace, Inc. Dba Circor Aerospace Inc · NSN 4820-01-117-3788 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-117-3788 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-117-3788. Primary manufacturer part number: A18596.
Features
  • Disk,valve — FSC 4820
  • Media for Which Designed: HYDRAULIC FLUID
  • Material: STEEL
  • Flange Diameter: 0.499 INCHES NOMINAL IN
  • Shank Diameter: 0.270 INCHES NOMINAL IN
  • Style Designator: POPPET
  • 4 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 Steel construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-117-3788, 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 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-117-3788
Primary Part NumberA18596
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCircor Aerospace, Inc. Dba Circor Aerospace Inc
StatusACTIVE
Media for Which DesignedHYDRAULIC FLUID
MaterialSTEEL
Flange Diameter0.499 INCHES NOMINAL IN
Shank Diameter0.270 INCHES NOMINAL IN
Style DesignatorPOPPET
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6210-00-022-5947412154-1 INTERCHANGEABLE
Filter,retainer
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
5330-00-217-4945 INTERCHANGEABLE
Seal,plain Encased
5950-00-647-7131 INTERCHANGEABLE
Reactor
5330-01-091-8486BB-1712 INTERCHANGEABLE
Gasket
Cunico Corporation
Cross-Reference Index
Part NumberManufacturer
8910-000190 Aerocontrolex Group, Inc. (USA)
11784098 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA)
A18596 PRIMARY Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
18596 Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
Related Parts
6210-00-022-5947INTERCHANGEABLE
FILTER,RETAINER
412154-1
5330-00-217-4945INTERCHANGEABLE
SEAL,PLAIN ENCASED
5950-00-647-7131INTERCHANGEABLE
REACTOR
5330-01-091-8486INTERCHANGEABLE
GASKET
BB-1712

Frequently Asked Questions

What is NSN 4820-01-117-3788?

NSN 4820-01-117-3788 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 4820-01-117-3788?

NSN 4820-01-117-3788 has 4 cross-referenced part numbers: 8910-000190 (Aerocontrolex Group, Inc.), 11784098 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate), A18596 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), 18596 (Circor Aerospace, Inc. Dba Circor Aerospace Inc).

What NSN replaces 4820-01-117-3788?

There are 4 known substitutes for 4820-01-117-3788: 6210-00-022-5947, 5330-00-217-4945, 5950-00-647-7131 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A18596?

Key specifications for A18596: Media for Which Designed: HYDRAULIC FLUID; Material: STEEL; Flange Diameter: 0.499 INCHES NOMINAL IN; Shank Diameter: 0.270 INCHES NOMINAL IN. 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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