The Heater,immersion,liquid Fuel Fir, cataloged under National Stock Number 4520-01-446-7556, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4520-01-446-7556
Item Name
Heater,immersion,liquid Fuel Fir
FSC / FSG
4520 / 45 — Space and Water Heating Equipment
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
WE325408-000
3/9Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 4520 — Space and Water Heating Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
NSN 4520-01-446-7556 is a Heater,immersion,liquid Fuel Fir, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
What are the specifications of 4520-01-446-7556?
Key specifications for 4520-01-446-7556: Special Features: VOLTS 480, PHASE 3, WATTS 2500, AMPS 3.0. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4520-01-446-7556 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.