FSC 4520 — Space and Water Heating Equipment · FSG 45 — Plumbing, Heating, and Waste Disposal
Government record, cited
Also searched as4520-01-493-3645 ·
4520014933645 ·
NIIN 014933645 ·
01-493-3645 ·
FSC 4520 Space and Water Heating Equipment · SHC-0002AJ · MIL-PRF-44493
Nearby stock numbers← 4520-01-493-3644 Heater, Space
·
4520-01-493-3647 Heater, Space →
Features
Heater,space — FSC 4520
Identification
NSN: 4520-01-493-3645
NIIN: 014933645
FSC: 4520 — Space and Water Heating Equipment
FSG: 45 — Plumbing, Heating, and Waste Disposal
General Description
The Heater,space, cataloged under National Stock Number 4520-01-493-3645, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4520-01-493-3645
Item Name
Heater,space
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
V
⇄Related Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4520-01-493-3647SHC-0002AKPOSSIBLE MATCH
HEATER,SPACE
Possible match (shared part number)Hdt Expeditionary Systems Inc
4520-01-493-3649SHC-0002ALPOSSIBLE MATCH
HEATER,SPACE
Possible match (shared part number)Hdt Expeditionary Systems Inc
4520-01-520-6477SHC60POSSIBLE MATCH
HEATER SPACE SHC 60
Possible match (shared part number)W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
SHC-0002AJ
3/2Design control — primary reference
U.S. Government activity
MIL-PRF-44493
4/1Identification reference
U.S. Government activity
Related Parts
4520-01-493-3647POSSIBLE MATCH
HEATER,SPACE
SHC-0002AK
4520-01-493-3649POSSIBLE MATCH
HEATER,SPACE
SHC-0002AL
4520-01-520-6477POSSIBLE MATCH
HEATER SPACE SHC 60
SHC60
Frequently Asked Questions
What is NSN 4520-01-493-3645?
NSN 4520-01-493-3645 is a Heater,space, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
What NSN replaces 4520-01-493-3645?
3 possible matches (shared part number, not a government interchangeability claim): 4520-01-493-3647, 4520-01-493-3649, 4520-01-520-6477. Verify interchangeability with system specifications before substitution.
What are the specifications of 4520-01-493-3645?
Key specifications for 4520-01-493-3645: Part Name Assigned by Controlling Agency: HEATER SHC (EDFP). 0 specifications are documented in the U.S. Government catalog.
Is NSN 4520-01-493-3645 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.