PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

255584PC13DLRNQASeat,valve

Huntington Ingalls Inc Div Newport News Shipbuilding · NSN 4820-00-319-5668 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-319-5668 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-319-5668. Primary manufacturer part number: 255584PC13DLRNQA.
Features
  • Seat,valve — FSC 4820
  • Seating Surface Shape: ANGULAR
  • Style Designator: PLAIN
  • Material: PLASTIC URETHANE AND GRAPHITE OVERALL
  • Body Outside Diameter: 4.480 INCHES NOMINAL IN
  • Body Inside Diameter: 3.062 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Huntington Ingalls Inc Div Newport News Shipbuilding
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Plastic Urethane and Graphite Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-319-5668, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references 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
NSN4820-00-319-5668
Primary Part Number255584PC13DLRNQA
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHuntington Ingalls Inc Div Newport News Shipbuilding
StatusACTIVE
Seating Surface ShapeANGULAR
Style DesignatorPLAIN
MaterialPLASTIC URETHANE AND GRAPHITE OVERALL
Body Outside Diameter4.480 INCHES NOMINAL IN
Body Inside Diameter3.062 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4820-00-319-5669255584PC14 INTERCHANGEABLE
Seat,valve
Huntington Ingalls Inc Div Newport News Shipbuilding
5895-01-007-95803902323 INTERCHANGEABLE
Decoder,pulse
Raytheon Company Dba Raytheon
4820-01-263-3108255584 PIECE 27 INTERCHANGEABLE
Seat,valve
Huntington Ingalls Inc Div Newport News Shipbuilding
5342-01-477-29296-51414-2 INTERCHANGEABLE
Coupling Half,clamp,grooved
The Boeing Company Div Legacy Wichita
Cross-Reference Index
Part NumberManufacturer
255584 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
255584PC13DLRNQA PRIMARY Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
Related Parts
4820-00-319-5669INTERCHANGEABLE
SEAT,VALVE
255584PC14
5895-01-007-9580INTERCHANGEABLE
DECODER,PULSE
3902323
4820-01-263-3108INTERCHANGEABLE
SEAT,VALVE
255584 PIECE 27
5342-01-477-2929INTERCHANGEABLE
COUPLING HALF,CLAMP,GROOVED
6-51414-2

Frequently Asked Questions

What is NSN 4820-00-319-5668?

NSN 4820-00-319-5668 is a Seat,valve, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-319-5668?

NSN 4820-00-319-5668 has 2 cross-referenced part numbers: 255584 (Huntington Ingalls Inc Div Newport News Shipbuilding), 255584PC13DLRNQA (Huntington Ingalls Inc Div Newport News Shipbuilding).

What NSN replaces 4820-00-319-5668?

There are 4 known substitutes for 4820-00-319-5668: 4820-00-319-5669, 5895-01-007-9580, 4820-01-263-3108 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 255584PC13DLRNQA?

Key specifications for 255584PC13DLRNQA: Seating Surface Shape: ANGULAR; Style Designator: PLAIN; Material: PLASTIC URETHANE AND GRAPHITE OVERALL; Overall Height: 0.562 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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