PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81F621841390200Disk,valve

William Powell Company, the Dba Powell Valve Div the Starflo Corporation · NSN 4820-01-145-6752 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-145-6752 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-145-6752. Primary manufacturer part number: 81F621841390200.
Features
  • Disk,valve — FSC 4820
  • Material: STEEL CORROSION RESISTING
  • Shoulder Width: 0.250 INCHES NOMINAL IN
  • Shoulder Height: 0.156 INCHES NOMINAL IN
  • Thread Series Designator: UNF
  • Nominal Thread Size: 0.312 INCHES IN
  • Seat Angle: 65.0 DEGREES NOMINAL
  • Style Designator: PLUG
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-145-6752, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is William Powell Company, the Dba Powell Valve Div the Starflo Corporation. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-145-6752
Primary Part Number81F621841390200
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWilliam Powell Company, the Dba Powell Valve Div the Starflo Corporation
StatusACTIVE
MaterialSTEEL CORROSION RESISTING
Shoulder Width0.250 INCHES NOMINAL IN
Shoulder Height0.156 INCHES NOMINAL IN
Thread Series DesignatorUNF
Nominal Thread Size0.312 INCHES IN
Seat Angle65.0 DEGREES NOMINAL
Style DesignatorPLUG
Thread Class2A A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
1560-00-077-215867408 INTERCHANGEABLE
Fuselage Assembly,a
Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems
4730-00-352-227067408 INTERCHANGEABLE
Nozzle,spray,fluid-Emulsion
Aeroil Products Co Inc
4820-01-153-143161F280641750000 INTERCHANGEABLE
Seat,valve
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
5305-01-653-892862184 INTERCHANGEABLE
Screw,machine
Aerovironment, Inc. Dba Aerovironment Inc
4820-01-687-3711 INTERCHANGEABLE
Disk,valve
Cross-Reference Index
Part NumberManufacturer
81F621841390200 PRIMARY William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
62184 William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
67408 PC 8 William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
F62184A William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
61F621841381B00 William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
67408 William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA)
Related Parts
1560-00-077-2158INTERCHANGEABLE
FUSELAGE ASSEMBLY,A
67408
4730-00-352-2270INTERCHANGEABLE
NOZZLE,SPRAY,FLUID-EMULSION
67408
4820-01-153-1431INTERCHANGEABLE
SEAT,VALVE
61F280641750000
5305-01-653-8928INTERCHANGEABLE
SCREW,MACHINE
62184
4820-01-687-3711INTERCHANGEABLE
DISK,VALVE

Frequently Asked Questions

What is NSN 4820-01-145-6752?

NSN 4820-01-145-6752 is a Disk,valve, manufactured by William Powell Company, the Dba Powell Valve Div the Starflo Corporation, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-145-6752?

NSN 4820-01-145-6752 has 6 cross-referenced part numbers: 81F621841390200 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 62184 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 67408 PC 8 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), F62184A (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 61F621841381B00 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation) and 1 more.

What NSN replaces 4820-01-145-6752?

There are 5 known substitutes for 4820-01-145-6752: 1560-00-077-2158, 4730-00-352-2270, 4820-01-153-1431 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 81F621841390200?

Key specifications for 81F621841390200: Material: STEEL CORROSION RESISTING; Shoulder Width: 0.250 INCHES NOMINAL IN; Shoulder Height: 0.156 INCHES NOMINAL IN; Overall Height: 0.796 INCHES NOMINAL IN. 9 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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