PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILH22577Heating Element,electrical,nonim

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4520-00-174-0073 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-00-174-0073 — this item is cataloged by the U.S. Government under National Stock Number 4520-00-174-0073. Primary manufacturer part number: MILH22577.
Features
  • Heating Element,electrical,nonim — FSC 4520
  • Heat Quantity: 1
  • Effective Heating Length: 17.000 INCHES NOMINAL IN
  • Length: 17.000 INCHES NOMINAL IN
  • Maximum Wattage Rating in Watts: 250.0 SINGLE VOLTAGE
  • Outside Diameter: 0.875 INCHES NOMINAL IN
  • Element Quantity: 1
  • Nondefinitive Spec/std Data: 3 TYPE
Applications
  • Applications requiring Nickel and Chromium Resistance Wire construction
General Description

The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-00-174-0073, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, 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
NSN4520-00-174-0073
Primary Part NumberMILH22577
Item NameHeating Element,electrical,nonim
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Heat Quantity1
Effective Heating Length17.000 INCHES NOMINAL IN
Length17.000 INCHES NOMINAL IN
Maximum Wattage Rating in Watts250.0 SINGLE VOLTAGE
Outside Diameter0.875 INCHES NOMINAL IN
Element Quantity1
Nondefinitive Spec/std Data3 TYPE
Departure From Cited DesignatorFOUR HELICALLY WOUND RESISTANCE WIRE COIL ARE DRAWN LENGTHWISE THROUGH SLOTS
Thread Series DesignatorUNF STUD
MaterialNICKEL AND CHROMIUM RESISTANCE WIRE
Terminal Quantity2
MaterialALUMINUM SHEATH
Element Radiation SpectrumNONINFRARED
Terminal Length1.000 INCHES NOMINAL IN
Mounting Method StyleTERMINAL MOUNTED
MaterialMAGNESIUM OXIDE RESISTANCE WIRE EMBEDDING/SUPPORT INSULATION
Thread Quantity32.0 PER INCH STUD
Voltage in Volts and Current Type220.0 AC SINGLE VOLTAGE
Nominal Thread Size0.190 INCHES STUD IN
PhaseSINGLE SINGLE VOLTAGE
Element Connection StyleSTUD TYPE
Body StyleFINNED, TUBULAR, TERMINAL'S AT EACH END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3110-00-606-78662-055-006-375-00 INTERCHANGEABLE
Bearing,ball,annular
Viking Pump, Inc
5305-00-902-10594313 INTERCHANGEABLE
Screw,shoulder
Roller Bearing Co of America, Inc Div Pic Design
Cross-Reference Index
Part NumberManufacturer
MILH22577 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
G123-19A Galbraith C C and Son Inc (USA)
G424 Galbraith C C and Son Inc (USA)
Related Parts
3110-00-606-7866INTERCHANGEABLE
BEARING,BALL,ANNULAR
2-055-006-375-00
5305-00-902-1059INTERCHANGEABLE
SCREW,SHOULDER
4313

Frequently Asked Questions

What is NSN 4520-00-174-0073?

NSN 4520-00-174-0073 is a Heating Element,electrical,nonim, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-00-174-0073?

NSN 4520-00-174-0073 has 3 cross-referenced part numbers: MILH22577 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), G123-19A (Galbraith C C and Son Inc), G424 (Galbraith C C and Son Inc).

What NSN replaces 4520-00-174-0073?

There are 2 known substitutes for 4520-00-174-0073: 3110-00-606-7866, 5305-00-902-1059. Verify interchangeability with system specifications before substitution.

What are the specifications of MILH22577?

Key specifications for MILH22577: Heat Quantity: 1; Effective Heating Length: 17.000 INCHES NOMINAL IN; Length: 17.000 INCHES NOMINAL IN; Maximum Wattage Rating in Watts: 250.0 SINGLE VOLTAGE. 23 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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