NSN 4520-01-373-9745 · NIIN 013739745 · Part number 118-553680-266
Chromalox Inc · FSC 4520 — Space and Water Heating Equipment · FSG 45 — Plumbing, Heating, and Waste Disposal · CAGE 07131
Government record, cited
NSN 4520-01-373-9745 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-373-9745. Manufacturer of record part number: 118-553680-266.
Also searched as4520-01-373-9745 ·
4520013739745 ·
NIIN 013739745 ·
01-373-9745 ·
FSC 4520 Space and Water Heating Equipment · CAGE 07131 · 118-553680-266 · 118-553680
The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-373-9745, 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. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Heating Element,electrical,nonim
FSC / FSG
4520 — Space and Water Heating Equipment (FSG 45)
Manufacturers
Chromalox Inc (CAGE 07131)
Technical Specifications
Parameter
Value
NSN
4520-01-373-9745
Primary Part Number
118-553680-266
Item Name
Heating Element,electrical,nonim
FSC / FSG
4520 / 45 — Space and Water Heating Equipment
Manufacturer
Chromalox Inc
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
⇄Related Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
NSN 4520-01-373-9745 is a Heating Element,electrical,nonim, manufactured by Chromalox Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
What part numbers are listed for NSN 4520-01-373-9745?
NSN 4520-01-373-9745 has 1 manufacturer part number on file: 118-553680-266 (Chromalox Inc).
What NSN replaces 4520-01-373-9745?
3 possible matches (shared part number, not a government interchangeability claim): 4520-01-373-9746, 4520-01-373-9750, 4520-01-373-9751. Verify interchangeability with system specifications before substitution.
Is NSN 4520-01-373-9745 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.