PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21411Seat,valve

Barksdale, Inc · NSN 4820-00-342-5585 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-342-5585 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-342-5585. Primary manufacturer part number: 21411.
Features
  • Seat,valve — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Barksdale, Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-342-5585, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Barksdale, Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeat,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersBarksdale, Inc (CAGE 89326); Us Army Aviation and Missile Command (CAGE 18876)
Technical Specifications
ParameterValue
NSN4820-00-342-5585
Primary Part Number21411
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerBarksdale, Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
1040-00-300-423821411 INTERCHANGEABLE
Bus,bar
L3harris Technologies, Inc. Div Space and Airborne Systems
5330-00-346-4610145196D INTERCHANGEABLE
Gasket
Brinkley Technology Group Llc Dba Hercules Manufacturing
5999-00-364-013121-411 INTERCHANGEABLE
Contact,electrical
Eaton Corp Opns & Technical Center
3820-00-402-82252-1411 INTERCHANGEABLE
Roller,cable
Terex Usa, Llc Dba Terex Equipment Services
5950-00-581-217721-411 INTERCHANGEABLE
Coil,radio Frequency
Neurotech Corp Control Electronics Div
5970-00-616-6337 INTERCHANGEABLE
Insulator,plate
5950-00-794-3971214-11 INTERCHANGEABLE
Coil,radio Frequency
Wilco Corp
5940-00-836-060210-321-1 INTERCHANGEABLE
Terminal,feedthru
Concord Electronics, Inc.
6685-00-902-6404T001 INTERCHANGEABLE
Thermometer,self-Indicating
Sigma Products & Mfg
5915-01-046-6531905482-1 INTERCHANGEABLE
Filter,radio Frequency Interfere
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
Cross-Reference Index
Part NumberManufacturer
21411 PRIMARY Barksdale, Inc (USA)
8486463 Us Army Aviation and Missile Command (USA)
Related Parts
1040-00-300-4238INTERCHANGEABLE
BUS,BAR
21411
5330-00-346-4610INTERCHANGEABLE
GASKET
145196D
5999-00-364-0131INTERCHANGEABLE
CONTACT,ELECTRICAL
21-411
3820-00-402-8225INTERCHANGEABLE
ROLLER,CABLE
2-1411
5950-00-581-2177INTERCHANGEABLE
COIL,RADIO FREQUENCY
21-411
5970-00-616-6337INTERCHANGEABLE
INSULATOR,PLATE
5950-00-794-3971INTERCHANGEABLE
COIL,RADIO FREQUENCY
214-11
5940-00-836-0602INTERCHANGEABLE
TERMINAL,FEEDTHRU
10-321-1
6685-00-902-6404INTERCHANGEABLE
THERMOMETER,SELF-INDICATING
T001
5915-01-046-6531INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
905482-1
5998-01-072-2465INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5210-01-094-6911INTERCHANGEABLE
GAGE,ANGLE
214-1-1

Frequently Asked Questions

What is NSN 4820-00-342-5585?

NSN 4820-00-342-5585 is a Seat,valve, manufactured by Barksdale, Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-342-5585?

NSN 4820-00-342-5585 has 2 cross-referenced part numbers: 21411 (Barksdale, Inc), 8486463 (Us Army Aviation and Missile Command).

What NSN replaces 4820-00-342-5585?

There are 12 known substitutes for 4820-00-342-5585: 1040-00-300-4238, 5330-00-346-4610, 5999-00-364-0131 and 9 more. Verify interchangeability with system specifications before substitution.

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