PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

F154403ESHeating Element,electrical,immer

The Electric Heater Co Dba Hubbell Electric Heater Co. · NSN 4520-01-420-8062 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-420-8062 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-420-8062. Primary manufacturer part number: F154403ES.
Features
  • Heating Element,electrical,immer — FSC 4520
  • Body Style: TUBULAR, FLANGED, W/TERMINALS
  • Bolt Circle Diameter: 5.000 INCHES NOMINAL IN
  • Phase: THREE SINGLE VOLTAGE
  • Material: COPPER SHEATH
  • Length: 20.000 INCHES NOMINAL IN
  • Nominal Thread Size: 0.250 INCHES STUD IN
  • Voltage in Volts and Current Type: 440.0 AC SINGLE VOLTAGE
Applications
  • Applications requiring Copper Sheath construction
General Description

The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-420-8062, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is The Electric Heater Co Dba Hubbell Electric Heater Co.. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-01-420-8062
Primary Part NumberF154403ES
Item NameHeating Element,electrical,immer
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerThe Electric Heater Co Dba Hubbell Electric Heater Co.
StatusACTIVE
Body StyleTUBULAR, FLANGED, W/TERMINALS
Bolt Circle Diameter5.000 INCHES NOMINAL IN
PhaseTHREE SINGLE VOLTAGE
MaterialCOPPER SHEATH
Length20.000 INCHES NOMINAL IN
Nominal Thread Size0.250 INCHES STUD IN
Voltage in Volts and Current Type440.0 AC SINGLE VOLTAGE
Nominal Thread Size0.375 INCHES MOUNTING FACILITY IN
Thread Quantity16 PER INCH MOUNTING FACILITY
Frequency in Hertz60.0
Terminal Quantity6
Thread Series DesignatorUNF STUD
Mounting Method StyleFLANGE TYPE MOUNTING FACILITY
Hole Diameter0.375 INCHES NOMINAL IN
Flange Thickness0.375 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) MOUNTING FACILITY
Maximum Wattage Rating in Watts15000.0 SINGLE VOLTAGE
Heat Control TypeTHERMOSTAT
Element Connection StyleHERMETICALLY SEALED STUD
Thermostat Range+90.0 TO 180.0 FAHRENHEIT DEGF
Hole or Slot Quantity6
Material Document and ClassificationMIL-H-22577 MIL SPEC SINGLE MATERIAL RESPONSE SHEATH
Heat Quantity1
Element Quantity3
Flange Diameter6.000 INCHES NOMINAL IN
Terminal Length2.8125 INCHES NOMINAL IN
Element Radiation SpectrumNONINFRARED
Thread Quantity28 PER INCH STUD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4520-01-420-805617750 REV H INTERCHANGEABLE
Heater,water,electric
The Electric Heater Co Dba Hubbell Electric Heater Co.
5220-01-677-28511775011 INTERCHANGEABLE
Gage,headspace
Navy Gage and Standards Laboratory Naval Surface Warfare Center Corona Div
Cross-Reference Index
Part NumberManufacturer
17750 REV H The Electric Heater Co Dba Hubbell Electric Heater Co. (USA)
F154403ES PRIMARY The Electric Heater Co Dba Hubbell Electric Heater Co. (USA)
17750 PIECE 11 The Electric Heater Co Dba Hubbell Electric Heater Co. (USA)
17750-11 The Electric Heater Co Dba Hubbell Electric Heater Co. (USA)
Related Parts
4520-01-420-8056INTERCHANGEABLE
HEATER,WATER,ELECTRIC
17750 REV H
5220-01-677-2851INTERCHANGEABLE
GAGE,HEADSPACE
1775011

Frequently Asked Questions

What is NSN 4520-01-420-8062?

NSN 4520-01-420-8062 is a Heating Element,electrical,immer, manufactured by The Electric Heater Co Dba Hubbell Electric Heater Co., classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-01-420-8062?

NSN 4520-01-420-8062 has 4 cross-referenced part numbers: 17750 REV H (The Electric Heater Co Dba Hubbell Electric Heater Co.), F154403ES (The Electric Heater Co Dba Hubbell Electric Heater Co.), 17750 PIECE 11 (The Electric Heater Co Dba Hubbell Electric Heater Co.), 17750-11 (The Electric Heater Co Dba Hubbell Electric Heater Co.).

What NSN replaces 4520-01-420-8062?

There are 2 known substitutes for 4520-01-420-8062: 4520-01-420-8056, 5220-01-677-2851. Verify interchangeability with system specifications before substitution.

What are the specifications of F154403ES?

Key specifications for F154403ES: Overall Length: 23.1875 INCHES NOMINAL IN; Body Style: TUBULAR, FLANGED, W/TERMINALS; Bolt Circle Diameter: 5.000 INCHES NOMINAL IN; Phase: THREE SINGLE VOLTAGE. 29 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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