PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

OT-715-120VHeating Element,electrical,nonim

Chromalox Inc Dba Chromalox Precision Heat and Control, Inc · NSN 4520-01-302-3506 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-302-3506 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-302-3506. Primary manufacturer part number: OT-715-120V.
Features
  • Heating Element,electrical,nonim — FSC 4520
  • Body Style: STRIP ELEMENT
  • Material: IRON RUST RESISTING SHEATH
  • Thread Quantity: 32.0 PER INCH STUD
  • Element Quantity: 1
  • Length: 6.000 INCHES NOMINAL IN
  • Frequency in Hertz: 60.0
  • Maximum Wattage Rating in Watts: 150.0 SINGLE VOLTAGE
Applications
  • Applications requiring Iron Rust Resisting Sheath construction
General Description

The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-302-3506, 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 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references 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
NSN4520-01-302-3506
Primary Part NumberOT-715-120V
Item NameHeating Element,electrical,nonim
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerChromalox Inc Dba Chromalox Precision Heat and Control, Inc
StatusACTIVE
Body StyleSTRIP ELEMENT
MaterialIRON RUST RESISTING SHEATH
Thread Quantity32.0 PER INCH STUD
Element Quantity1
Length6.000 INCHES NOMINAL IN
Frequency in Hertz60.0
Maximum Wattage Rating in Watts150.0 SINGLE VOLTAGE
PhaseTHREE SINGLE VOLTAGE
Watt Density Rating11.0 PER SQUARE INCH SINGLE VOLTAGE
Voltage in Volts and Current Type120.0 AC SINGLE VOLTAGE
Nominal Thread Size0.190 INCHES STUD IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) STUD
Heat Quantity1
Terminal Quantity2
Terminal Length0.375 INCHES NOMINAL IN
Terminal Arrangement StyleOFFSET OR STAGGERED AT ONE END
Element Radiation SpectrumNONINFRARED
Mounting Facility Length0.938 INCHES NOMINAL IN
Element Connection StyleHERMETICALLY SEALED STUD
Mounting Method StyleSTUD TYPE MOUNTING FACILITY
Width1.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5950-01-106-4425122888-25 INTERCHANGEABLE
Coil,radio Frequency
Cubic Defense Applications, Inc.
4520-01-180-3324129322 INTERCHANGEABLE
Heating Element,electrical,nonim
Chromalox Inc Dba Chromalox Precision Heat and Control, Inc
5340-01-217-0976129314 INTERCHANGEABLE
Leaf,butt Hinge
L3harris Technologies, Inc Div Space & Airborne Systems
Cross-Reference Index
Part NumberManufacturer
OT-715 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
129314 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
QT-715 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
OT-715-120V PRIMARY Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
Related Parts
5950-01-106-4425INTERCHANGEABLE
COIL,RADIO FREQUENCY
122888-25
4520-01-180-3324INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
129322
5340-01-217-0976INTERCHANGEABLE
LEAF,BUTT HINGE
129314

Frequently Asked Questions

What is NSN 4520-01-302-3506?

NSN 4520-01-302-3506 is a Heating Element,electrical,nonim, 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 4520-01-302-3506?

NSN 4520-01-302-3506 has 4 cross-referenced part numbers: OT-715 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), 129314 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), QT-715 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), OT-715-120V (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).

What NSN replaces 4520-01-302-3506?

There are 3 known substitutes for 4520-01-302-3506: 5950-01-106-4425, 4520-01-180-3324, 5340-01-217-0976. Verify interchangeability with system specifications before substitution.

What are the specifications of OT-715-120V?

Key specifications for OT-715-120V: Overall Length: 7.500 INCHES NOMINAL IN; Body Style: STRIP ELEMENT; Material: IRON RUST RESISTING SHEATH; Thread Quantity: 32.0 PER INCH STUD. 22 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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