PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20676Seat,valve

Schneider Electric Systems Usa Inc · NSN 4820-00-343-6041 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-343-6041 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-343-6041. Primary manufacturer part number: 20676.
Features
  • Seat,valve — FSC 4820
  • Material: COPPER ALLOY OVERALL
  • Style Designator: PLAIN THREADED
  • Thread Series Designator: UNS SINGLE THREADED PORTION
  • Nominal Thread Size: 2.619 INCHES SINGLE THREADED PORTION IN
  • Thread Length: 0.375 INCHES NOMINAL SINGLE THREADED PORTION IN
  • Body Inside Diameter: 1.998 INCHES MINIMUM AND 2.002 INCHES MAXIMUM IN
  • Thread Class: 2A SINGLE THREADED PORTION A
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-343-6041, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Schneider Electric Systems Usa Inc. Government technical data includes 9 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-343-6041
Primary Part Number20676
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSchneider Electric Systems Usa Inc
StatusACTIVE
MaterialCOPPER ALLOY OVERALL
Style DesignatorPLAIN THREADED
Thread Series DesignatorUNS SINGLE THREADED PORTION
Nominal Thread Size2.619 INCHES SINGLE THREADED PORTION IN
Thread Length0.375 INCHES NOMINAL SINGLE THREADED PORTION IN
Body Inside Diameter1.998 INCHES MINIMUM AND 2.002 INCHES MAXIMUM IN
Thread Class2A SINGLE THREADED PORTION A
Thread Quantity Per Inch16 SINGLE THREADED PORTION
Seating Surface ShapeFLAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5110-00-062-0882730BB-2 INTERCHANGEABLE
Punch and Die,knockout
Greenlee Textron Inc.
5133-00-189-9281 INTERCHANGEABLE
Drill,twist
6685-00-458-4737 INTERCHANGEABLE
Pyrometer,indicating
3455-00-516-504219839 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5365-00-741-986762B21728 INTERCHANGEABLE
Ring,clamp
Air Force Lifecycle Management Center Electronic Components (aflcmc/ezss)
5305-01-370-695708024 INTERCHANGEABLE
Screw,shoulder
H-K Connecticut Holding Company
6850-01-428-3583C3906A INTERCHANGEABLE
Toner,indirect Electrostatic Pro
Hewlett-Packard Company Dba HP
4010-01-478-2412 INTERCHANGEABLE
Chain,welded
Cross-Reference Index
Part NumberManufacturer
20676 PRIMARY Schneider Electric Systems Usa Inc (USA)
Related Parts
5110-00-062-0882INTERCHANGEABLE
PUNCH AND DIE,KNOCKOUT
730BB-2
5133-00-189-9281INTERCHANGEABLE
DRILL,TWIST
6685-00-458-4737INTERCHANGEABLE
PYROMETER,INDICATING
3455-00-516-5042INTERCHANGEABLE
REAMER,MACHINE
19839
5365-00-741-9867INTERCHANGEABLE
RING,CLAMP
62B21728
5305-01-370-6957INTERCHANGEABLE
SCREW,SHOULDER
08024
6850-01-428-3583INTERCHANGEABLE
TONER,INDIRECT ELECTROSTATIC PRO
C3906A
4010-01-478-2412INTERCHANGEABLE
CHAIN,WELDED

Frequently Asked Questions

What is NSN 4820-00-343-6041?

NSN 4820-00-343-6041 is a Seat,valve, manufactured by Schneider Electric Systems Usa Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-343-6041?

NSN 4820-00-343-6041 has 1 cross-referenced part number: 20676 (Schneider Electric Systems Usa Inc).

What NSN replaces 4820-00-343-6041?

There are 8 known substitutes for 4820-00-343-6041: 5110-00-062-0882, 5133-00-189-9281, 6685-00-458-4737 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20676?

Key specifications for 20676: Material: COPPER ALLOY OVERALL; Style Designator: PLAIN THREADED; Thread Series Designator: UNS SINGLE THREADED PORTION; Overall Height: 0.812 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com