PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21403Seat,valve

Barksdale, Inc · NSN 4820-01-200-0610 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-200-0610 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-200-0610. Primary manufacturer part number: 21403.
Features
  • Seat,valve — FSC 4820
  • 1 verified cross-reference
  • 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 4820-01-200-0610, 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 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 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)
Technical Specifications
ParameterValue
NSN4820-01-200-0610
Primary Part Number21403
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerBarksdale, Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5306-00-274-1917142419 INTERCHANGEABLE
Bolt,machine
Johnson Controls Navy Systems, Llc
5330-00-526-815721403 INTERCHANGEABLE
Gasket
Liftec Inc Div Liftec, Inc.
3040-01-198-747921403 INTERCHANGEABLE
Head,linear Actuating Cylinder
Moog Inc. Dba Ampac-Isp Corp
6240-01-313-6860F15T8-18/SPECTRUMLITE-PL/HD17M INTERCHANGEABLE
Lamp,fluorescent
Westron Corporation Dba Westron Lighting
4720-01-358-213021403 INTERCHANGEABLE
Hose,preformed
Gates Corporation
2805-01-538-286121403 INTERCHANGEABLE
Trim Tab,gearcase
Willard Marine, Inc.
Cross-Reference Index
Part NumberManufacturer
21403 PRIMARY Barksdale, Inc (USA)
Related Parts
5306-00-274-1917INTERCHANGEABLE
BOLT,MACHINE
142419
5330-00-526-8157INTERCHANGEABLE
GASKET
21403
3040-01-198-7479INTERCHANGEABLE
HEAD,LINEAR ACTUATING CYLINDER
21403
6240-01-313-6860INTERCHANGEABLE
LAMP,FLUORESCENT
F15T8-18/SPECTRUMLITE-PL/HD17M
4720-01-358-2130INTERCHANGEABLE
HOSE,PREFORMED
21403
2805-01-538-2861INTERCHANGEABLE
TRIM TAB,GEARCASE
21403

Frequently Asked Questions

What is NSN 4820-01-200-0610?

NSN 4820-01-200-0610 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 4820-01-200-0610?

NSN 4820-01-200-0610 has 1 cross-referenced part number: 21403 (Barksdale, Inc).

What NSN replaces 4820-01-200-0610?

There are 6 known substitutes for 4820-01-200-0610: 5306-00-274-1917, 5330-00-526-8157, 3040-01-198-7479 and 3 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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