PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8621Disk,valve

Emerson Automation Solutions Final Control Us Lp Div Navy Product Team · NSN 4820-00-036-0444 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-036-0444 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-036-0444. Primary manufacturer part number: 8621.
Features
  • Disk,valve — FSC 4820
  • Seat Angle: 45.0 DEGREES NOMINAL
  • Shoulder Width: 0.250 INCHES NOMINAL IN
  • Style Designator: PLUG
  • Nominal Thread Size: 0.875 INCHES IN
  • Thread Series Designator: UNS
  • Thread Quantity Per Inch: 27
  • Material: COPPER ALLOY
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-00-036-0444, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-036-0444
Primary Part Number8621
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerEmerson Automation Solutions Final Control Us Lp Div Navy Product Team
StatusACTIVE
Seat Angle45.0 DEGREES NOMINAL
Shoulder Width0.250 INCHES NOMINAL IN
Style DesignatorPLUG
Nominal Thread Size0.875 INCHES IN
Thread Series DesignatorUNS
Thread Quantity Per Inch27
MaterialCOPPER ALLOY
Shoulder Height0.246 INCHES NOMINAL IN
Thread Class2A A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-062-7609 INTERCHANGEABLE
Washer,flat
5935-00-417-0519 INTERCHANGEABLE
Connector,plug,electrical
5975-00-538-31338621 INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
5360-00-597-830458018A INTERCHANGEABLE
Spring,helical,compression
Brinkley Technology Group Llc Dba Hercules Manufacturing
5960-00-926-0211 INTERCHANGEABLE
Electron Tube
4520-01-021-189310217 INTERCHANGEABLE
Heating Element,electrical,nonim
G.s. Blodgett, Llc Div Blodgett
5120-01-110-4472 INTERCHANGEABLE
Contact Positioner,terminal Crim
6665-01-112-21308621 INTERCHANGEABLE
Probe,radiation Monitor
Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
6145-01-157-09338621 INTERCHANGEABLE
Cable,power,electrical
Belden Wire & Cable Company Llc Dba Belden Cdt Electronics Division
5998-01-237-6048 INTERCHANGEABLE
Circuit Card Assembly
Cross-Reference Index
Part NumberManufacturer
8621 PRIMARY Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA)
Related Parts
5310-00-062-7609INTERCHANGEABLE
WASHER,FLAT
5935-00-417-0519INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5975-00-538-3133INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
8621
5360-00-597-8304INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
58018A
5960-00-926-0211INTERCHANGEABLE
ELECTRON TUBE
4520-01-021-1893INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
10217
5120-01-110-4472INTERCHANGEABLE
CONTACT POSITIONER,TERMINAL CRIM
6665-01-112-2130INTERCHANGEABLE
PROBE,RADIATION MONITOR
8621
6145-01-157-0933INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
8621
5998-01-237-6048INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5985-01-324-2849INTERCHANGEABLE
ATTENUATOR,FIXED
8621
5120-01-335-8608INTERCHANGEABLE
CONTACT POSITIONER,TERMINAL CRIM
86-21

Frequently Asked Questions

What is NSN 4820-00-036-0444?

NSN 4820-00-036-0444 is a Disk,valve, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-036-0444?

NSN 4820-00-036-0444 has 1 cross-referenced part number: 8621 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).

What NSN replaces 4820-00-036-0444?

There are 12 known substitutes for 4820-00-036-0444: 5310-00-062-7609, 5935-00-417-0519, 5975-00-538-3133 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8621?

Key specifications for 8621: Seat Angle: 45.0 DEGREES NOMINAL; Overall Height: 1.570 INCHES NOMINAL IN; Shoulder Width: 0.250 INCHES NOMINAL IN; Style Designator: PLUG. 10 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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