PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4563BFloat,valve

Howell Laboratories Inc Dba Howell Laboratories Inc · NSN 4820-01-282-2577 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-282-2577 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-282-2577. Primary manufacturer part number: 4563B.
Features
  • Float,valve — FSC 4820
  • Connection Type: UNTHREADED
  • Material: COPPER ALLOY
  • Overall Diameter: 0.625 INCHES NOMINAL IN
  • Shape: CYLINDRICAL
  • 2 verified cross-references
  • Primary manufacturer: Howell Laboratories Inc Dba Howell Laboratories Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Copper Alloy construction
General Description

The Float,valve, cataloged under National Stock Number 4820-01-282-2577, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Howell Laboratories Inc Dba Howell Laboratories Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-282-2577
Primary Part Number4563B
Item NameFloat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHowell Laboratories Inc Dba Howell Laboratories Inc
StatusACTIVE
Connection TypeUNTHREADED
MaterialCOPPER ALLOY
Overall Diameter0.625 INCHES NOMINAL IN
ShapeCYLINDRICAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3110-00-108-80112B5242 INTERCHANGEABLE
Roller,bearing
Fwd Seagrave Holdings Lp
3110-00-117-06794563 INTERCHANGEABLE
Bearing,roller,cylindrical
Morris Material Handling, Inc.
2990-00-358-5767T-4563 INTERCHANGEABLE
Muffler,exhaust
Cummins Filtration Inc.
5815-00-872-381704563 INTERCHANGEABLE
Lock,window Release
Marine Corps Systems Command Div Marine Corps Systems Command Technical Data Repository Customer Service
5915-01-086-19764563 INTERCHANGEABLE
Suppressor,harmonic,electric Org
Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
5310-01-479-26074563 INTERCHANGEABLE
Washer,flat
Independent Rough Terrain Center Llc
6680-01-487-07464563 INTERCHANGEABLE
Float,meter,flow Rate Indicating
Howell Laboratories Inc Dba Howell Laboratories Inc
Cross-Reference Index
Part NumberManufacturer
4563 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
4563B PRIMARY Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
Related Parts
3110-00-108-8011INTERCHANGEABLE
ROLLER,BEARING
2B5242
3110-00-117-0679INTERCHANGEABLE
BEARING,ROLLER,CYLINDRICAL
4563
2990-00-358-5767INTERCHANGEABLE
MUFFLER,EXHAUST
T-4563
5815-00-872-3817INTERCHANGEABLE
LOCK,WINDOW RELEASE
04563
5915-01-086-1976INTERCHANGEABLE
SUPPRESSOR,HARMONIC,ELECTRIC ORG
4563
5310-01-479-2607INTERCHANGEABLE
WASHER,FLAT
4563
6680-01-487-0746INTERCHANGEABLE
FLOAT,METER,FLOW RATE INDICATING
4563

Frequently Asked Questions

What is NSN 4820-01-282-2577?

NSN 4820-01-282-2577 is a Float,valve, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-282-2577?

NSN 4820-01-282-2577 has 2 cross-referenced part numbers: 4563 (Howell Laboratories Inc Dba Howell Laboratories Inc), 4563B (Howell Laboratories Inc Dba Howell Laboratories Inc).

What NSN replaces 4820-01-282-2577?

There are 7 known substitutes for 4820-01-282-2577: 3110-00-108-8011, 3110-00-117-0679, 2990-00-358-5767 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4563B?

Key specifications for 4563B: Connection Type: UNTHREADED; Material: COPPER ALLOY; Overall Diameter: 0.625 INCHES NOMINAL IN; Shape: CYLINDRICAL. 5 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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