PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3-10-22-1Heater,circulation,electric

Watlow Electric Manufacturing Co Dba Watlow · NSN 4520-01-264-8415 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-264-8415 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-264-8415. Primary manufacturer part number: 3-10-22-1.
Features
  • Heater,circulation,electric — FSC 4520
  • General Characteristics Item Description: 208 VAC,1200 W; STNLS STEEL SHEATH; EXPLOSION-PROOF HOUSING; SPECIAL FLANGE VAC
  • 1 verified cross-reference
  • 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,circulation,electric, cataloged under National Stock Number 4520-01-264-8415, 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. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-01-264-8415
Primary Part Number3-10-22-1
Item NameHeater,circulation,electric
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerWatlow Electric Manufacturing Co Dba Watlow
StatusACTIVE
General Characteristics Item Description208 VAC,1200 W; STNLS STEEL SHEATH; EXPLOSION-PROOF HOUSING; SPECIAL FLANGE VAC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5905-00-089-8881310221 INTERCHANGEABLE
Resistor,fixed,wire Wound
Telemechanics Inc
5961-00-912-9132 INTERCHANGEABLE
Semiconductor Device,diode
5306-01-062-7142310221 INTERCHANGEABLE
Bolt
Caterpillar Inc Div Caterpillar Defense
Cross-Reference Index
Part NumberManufacturer
3-10-22-1 PRIMARY Watlow Electric Manufacturing Co Dba Watlow (USA)
Related Parts
5905-00-089-8881INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
310221
5961-00-912-9132INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5306-01-062-7142INTERCHANGEABLE
BOLT
310221

Frequently Asked Questions

What is NSN 4520-01-264-8415?

NSN 4520-01-264-8415 is a Heater,circulation,electric, 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 4520-01-264-8415?

NSN 4520-01-264-8415 has 1 cross-referenced part number: 3-10-22-1 (Watlow Electric Manufacturing Co Dba Watlow).

What NSN replaces 4520-01-264-8415?

There are 3 known substitutes for 4520-01-264-8415: 5905-00-089-8881, 5961-00-912-9132, 5306-01-062-7142. Verify interchangeability with system specifications before substitution.

What are the specifications of 3-10-22-1?

Key specifications for 3-10-22-1: General Characteristics Item Description: 208 VAC,1200 W; STNLS STEEL SHEATH; EXPLOSION-PROOF HOUSING; SPECIAL FLANGE VAC. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com