PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21777Disk,valve

Eaton Aerospace Llc · NSN 4810-01-049-2511 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-01-049-2511 — this item is cataloged by the U.S. Government under National Stock Number 4810-01-049-2511. Primary manufacturer part number: 21777.
Features
  • Disk,valve — FSC 4810
  • Flange Diameter: 0.250 INCHES NOMINAL IN
  • Shank Diameter: 0.380 INCHES NOMINAL IN
  • Material: STEEL
  • 1 verified cross-reference
  • Primary manufacturer: Eaton Aerospace Llc
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 4810-01-049-2511, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Eaton Aerospace Llc. Government technical data includes 3 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4810-01-049-2511
Primary Part Number21777
Item NameDisk,valve
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerEaton Aerospace Llc
StatusACTIVE
Flange Diameter0.250 INCHES NOMINAL IN
Shank Diameter0.380 INCHES NOMINAL IN
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4820-01-123-559821777 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Electro Impulse Laboratory Inc Dba Electro Impulse Inc
5330-01-266-3184 INTERCHANGEABLE
Gasket Set
5945-01-382-6103910-4X INTERCHANGEABLE
Relay,solid State
Te Connectivity Corporation
3433-01-589-581421777 INTERCHANGEABLE
Torch Outfit,welding
Esab Group, Inc., the Dba Esab Welding and Cutting Products Div Esab Welding and Cuttng
Cross-Reference Index
Part NumberManufacturer
21777 PRIMARY Eaton Aerospace Llc (USA)
Related Parts
4820-01-123-5598INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
21777
5330-01-266-3184INTERCHANGEABLE
GASKET SET
5945-01-382-6103INTERCHANGEABLE
RELAY,SOLID STATE
910-4X
3433-01-589-5814INTERCHANGEABLE
TORCH OUTFIT,WELDING
21777

Frequently Asked Questions

What is NSN 4810-01-049-2511?

NSN 4810-01-049-2511 is a Disk,valve, manufactured by Eaton Aerospace Llc, classified under FSC 4810 (No Item Name Available). Status: active.

What are the part numbers for NSN 4810-01-049-2511?

NSN 4810-01-049-2511 has 1 cross-referenced part number: 21777 (Eaton Aerospace Llc).

What NSN replaces 4810-01-049-2511?

There are 4 known substitutes for 4810-01-049-2511: 4820-01-123-5598, 5330-01-266-3184, 5945-01-382-6103 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21777?

Key specifications for 21777: Flange Diameter: 0.250 INCHES NOMINAL IN; Shank Diameter: 0.380 INCHES NOMINAL IN; Overall Height: 0.235 INCHES NOMINAL IN; Material: STEEL. 4 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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