PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

139723Heating Element,electrical,immer

Chromalox Inc Dba Chromalox Precision Heat and Control, Inc · NSN 4520-01-581-0152 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-581-0152 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-581-0152. Primary manufacturer part number: 139723.
Features
  • Heating Element,electrical,immer — FSC 4520
  • Body Style: TUBULAR, U SHAPED
  • Supplementary Features: MODEL MTO-110A A
  • Element Radiation Spectrum: NONINFRARED
  • Material: STEEL CORROSION RESISTING RESISTANCE WIRE EMBEDDING/SUPPORT INSULATION
  • Length: 12.500 INCHES NOMINAL IN
  • Element Quantity: 2
  • 1 verified cross-reference
Applications
  • Applications requiring Steel Corrosion Resisting Resistance Wire Embedding/support Insulation construction
General Description

The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-581-0152, 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 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc. Government technical data includes 6 verified specifications, 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-01-581-0152
Primary Part Number139723
Item NameHeating Element,electrical,immer
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerChromalox Inc Dba Chromalox Precision Heat and Control, Inc
StatusACTIVE
Body StyleTUBULAR, U SHAPED
Supplementary FeaturesMODEL MTO-110A A
Element Radiation SpectrumNONINFRARED
MaterialSTEEL CORROSION RESISTING RESISTANCE WIRE EMBEDDING/SUPPORT INSULATION
Length12.500 INCHES NOMINAL IN
Element Quantity2
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3950-01-432-9451 INTERCHANGEABLE
Sleeve,drum,winch
Cross-Reference Index
Part NumberManufacturer
139723 PRIMARY Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
Related Parts
3950-01-432-9451INTERCHANGEABLE
SLEEVE,DRUM,WINCH

Frequently Asked Questions

What is NSN 4520-01-581-0152?

NSN 4520-01-581-0152 is a Heating Element,electrical,immer, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-01-581-0152?

NSN 4520-01-581-0152 has 1 cross-referenced part number: 139723 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).

What NSN replaces 4520-01-581-0152?

There is 1 known substitute for 4520-01-581-0152: 3950-01-432-9451. Verify interchangeability with system specifications before substitution.

What are the specifications of 139723?

Key specifications for 139723: Body Style: TUBULAR, U SHAPED; Supplementary Features: MODEL MTO-110A A; Element Radiation Spectrum: NONINFRARED; Material: STEEL CORROSION RESISTING RESISTANCE WIRE EMBEDDING/SUPPORT INSULATION. 9 total characteristics are documented in the Federal Logistics Information System.

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