PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILH43540Heater,immersion,liquid Fuel Fir

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4520-00-469-6593 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-00-469-6593 — this item is cataloged by the U.S. Government under National Stock Number 4520-00-469-6593. Primary manufacturer part number: MILH43540.
Features
  • Heater,immersion,liquid Fuel Fir — FSC 4520
  • General Characteristics Item Description: DIMENSIONAL DATA,15 IN. DIA OF COMBUSTION CHAMBER,4 IN. DIA OF STOVE PIPE,34-3/4 IN. LG OF HEATER ONLY; DESIGNED FOR ALL TYPES OF GASOLINE; 2.2 GAL FUEL TANK CAPACITY; 35000 NORMAL RATED BTU HEAT OUTPUT CAPACITY; NO SPECIAL FEATURES IN
  • 2 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,immersion,liquid Fuel Fir, cataloged under National Stock Number 4520-00-469-6593, 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 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 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: Cancelled.

Technical Specifications
ParameterValue
NSN4520-00-469-6593
Primary Part NumberMILH43540
Item NameHeater,immersion,liquid Fuel Fir
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
General Characteristics Item DescriptionDIMENSIONAL DATA,15 IN. DIA OF COMBUSTION CHAMBER,4 IN. DIA OF STOVE PIPE,34-3/4 IN. LG OF HEATER ONLY; DESIGNED FOR ALL TYPES OF GASOLINE; 2.2 GAL FUEL TANK CAPACITY; 35000 NORMAL RATED BTU HEAT OUTPUT CAPACITY; NO SPECIAL FEATURES IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
4540-00-139-34285-13-2685-5 INTERCHANGEABLE
Fuel Tank Assembly,heater
W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center
4730-00-555-85275-13-2686-5-12 INTERCHANGEABLE
Plug,filler
W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center
Cross-Reference Index
Part NumberManufacturer
MILH43540 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
51326802 W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center (USA)
Related Parts
4540-00-139-3428INTERCHANGEABLE
FUEL TANK ASSEMBLY,HEATER
5-13-2685-5
4730-00-555-8527INTERCHANGEABLE
PLUG,FILLER
5-13-2686-5-12

Frequently Asked Questions

What is NSN 4520-00-469-6593?

NSN 4520-00-469-6593 is a Heater,immersion,liquid Fuel Fir, 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: cancelled.

What are the part numbers for NSN 4520-00-469-6593?

NSN 4520-00-469-6593 has 2 cross-referenced part numbers: MILH43540 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 51326802 (W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center).

What NSN replaces 4520-00-469-6593?

There are 2 known substitutes for 4520-00-469-6593: 4540-00-139-3428, 4730-00-555-8527. Verify interchangeability with system specifications before substitution.

What are the specifications of MILH43540?

Key specifications for MILH43540: General Characteristics Item Description: DIMENSIONAL DATA,15 IN. DIA OF COMBUSTION CHAMBER,4 IN. DIA OF STOVE PIPE,34-3/4 IN. LG OF HEATER ONLY; DESIGNED FOR ALL TYPES OF GASOLINE; 2.2 GAL FUEL TANK CAPACITY; 35000 NORMAL RATED BTU HEAT OUTPUT CAPACITY; NO SPECIAL FEATURES IN. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4520-00-469-6593 still in active supply?

NSN 4520-00-469-6593 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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