PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3-10-22-4Heater,immersion,liquid Fuel Fir

Watlow Electric Manufacturing Co Dba Watlow · NSN 4520-01-293-2462 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-293-2462 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-293-2462. Primary manufacturer part number: 3-10-22-4.
Features
  • Heater,immersion,liquid Fuel Fir — FSC 4520
  • 2 verified cross-references
  • Primary manufacturer: Watlow Electric Manufacturing Co Dba Watlow
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 4520-01-293-2462, 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 Watlow Electric Manufacturing Co Dba Watlow. 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: Active.

Catalog Facts
Item NameHeater,immersion,liquid Fuel Fir
FSC / FSG4520 — No Item Name Available (FSG 45)
ManufacturersTextron Systems Corp (CAGE 50079); Watlow Electric Manufacturing Co Dba Watlow (CAGE 79221)
Technical Specifications
ParameterValue
NSN4520-01-293-2462
Primary Part Number3-10-22-4
Item NameHeater,immersion,liquid Fuel Fir
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerWatlow Electric Manufacturing Co Dba Watlow
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6625-00-392-6405 INTERCHANGEABLE
Spring
5815-00-975-962685668H2C INTERCHANGEABLE
Finger
Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch
Cross-Reference Index
Part NumberManufacturer
261-6386221-001 Textron Systems Corp (USA)
3-10-22-4 PRIMARY Watlow Electric Manufacturing Co Dba Watlow (USA)
Related Parts
6625-00-392-6405INTERCHANGEABLE
SPRING
5815-00-975-9626INTERCHANGEABLE
FINGER
85668H2C

Frequently Asked Questions

What is NSN 4520-01-293-2462?

NSN 4520-01-293-2462 is a Heater,immersion,liquid Fuel Fir, manufactured by Watlow Electric Manufacturing Co Dba Watlow, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-01-293-2462?

NSN 4520-01-293-2462 has 2 cross-referenced part numbers: 261-6386221-001 (Textron Systems Corp), 3-10-22-4 (Watlow Electric Manufacturing Co Dba Watlow).

What NSN replaces 4520-01-293-2462?

There are 2 known substitutes for 4520-01-293-2462: 6625-00-392-6405, 5815-00-975-9626. Verify interchangeability with system specifications before substitution.

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