NSN 4520-01-373-0417 · NIIN 013730417 · Part number 118-553680-271
Chromalox Inc · FSC 4520 — Space and Water Heating Equipment · FSG 45 — Plumbing, Heating, and Waste Disposal · CAGE 07131
Government record, cited
NSN 4520-01-373-0417 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-373-0417. Manufacturer of record part number: 118-553680-271.
Also searched as4520-01-373-0417 ·
4520013730417 ·
NIIN 013730417 ·
01-373-0417 ·
FSC 4520 Space and Water Heating Equipment · CAGE 07131 · 118-553680-271 · 106-302196-998
Voltage in Volts and Current Type: 600.0 AC SINGLE VOLTAGE
Body Style: FINNED, TUBULAR, U SHAPED
Maximum Wattage Rating in Watts: 2922.0 SINGLE VOLTAGE
Element Radiation Spectrum: NONINFRARED
Material: STEEL CORROSION RESISTING SHEATH
1 manufacturer part number on file
Manufacturer of record: Chromalox Inc
Identification
NSN: 4520-01-373-0417
NIIN: 013730417
FSC: 4520 — Space and Water Heating Equipment
FSG: 45 — Plumbing, Heating, and Waste Disposal
Primary part number: 118-553680-271
Manufacturer: Chromalox Inc
General Description
The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-373-0417, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Chromalox Inc. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
4520-01-373-0417
Primary Part Number
118-553680-271
Item Name
Heating Element,electrical,immer
FSC / FSG
4520 / 45 — Space and Water Heating Equipment
Manufacturer
Chromalox Inc
Status
ACTIVE
Voltage in Volts and Current Type
600.0 AC SINGLE VOLTAGE
Body Style
FINNED, TUBULAR, U SHAPED
Maximum Wattage Rating in Watts
2922.0 SINGLE VOLTAGE
Element Radiation Spectrum
NONINFRARED
Material
STEEL CORROSION RESISTING SHEATH
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
⇄Related Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
NSN 4520-01-373-0417 is a Heating Element,electrical,immer, manufactured by Chromalox Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
What part numbers are listed for NSN 4520-01-373-0417?
NSN 4520-01-373-0417 has 1 manufacturer part number on file: 118-553680-271 (Chromalox Inc).
What NSN replaces 4520-01-373-0417?
6 possible matches (shared part number, not a government interchangeability claim): 4520-01-373-1025, 4520-01-373-2615, 4520-01-373-5445. Verify interchangeability with system specifications before substitution.
What are the specifications of 118-553680-271?
Key specifications for 118-553680-271: Voltage in Volts and Current Type: 600.0 AC SINGLE VOLTAGE; Body Style: FINNED, TUBULAR, U SHAPED; Maximum Wattage Rating in Watts: 2922.0 SINGLE VOLTAGE; Element Radiation Spectrum: NONINFRARED. 5 specifications are documented in the U.S. Government catalog.
Is NSN 4520-01-373-0417 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.