PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ARMT0-3305T2/275127Heating Element,electrical,immer

Chromalox Inc Dba Chromalox Precision Heat and Control, Inc · NSN 4520-01-374-5420 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-374-5420 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-374-5420. Primary manufacturer part number: ARMT0-3305T2/275127.
Features
  • Heating Element,electrical,immer — FSC 4520
  • Element Quantity: 3
  • Watt Density Rating: 24.0 PER SQUARE INCH SINGLE VOLTAGE
  • Length: 17.375 INCHES NOMINAL IN
  • Thread Series Designator: NPT STUD
  • Nominal Thread Size: 2.500 INCHES STUD IN
  • Voltage in Volts and Current Type: 480.0 AC SINGLE VOLTAGE
  • Maximum Wattage Rating in Watts: 3000.0 SINGLE VOLTAGE
Applications
  • Applications requiring Steel Sheath construction
General Description

The Heating Element,electrical,immer, cataloged under National Stock Number 4520-01-374-5420, 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 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references 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
NSN4520-01-374-5420
Primary Part NumberARMT0-3305T2/275127
Item NameHeating Element,electrical,immer
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerChromalox Inc Dba Chromalox Precision Heat and Control, Inc
StatusACTIVE
Element Quantity3
Watt Density Rating24.0 PER SQUARE INCH SINGLE VOLTAGE
Length17.375 INCHES NOMINAL IN
Thread Series DesignatorNPT STUD
Nominal Thread Size2.500 INCHES STUD IN
Voltage in Volts and Current Type480.0 AC SINGLE VOLTAGE
Maximum Wattage Rating in Watts3000.0 SINGLE VOLTAGE
MaterialSTEEL SHEATH
Thread Quantity8 PER INCH STUD
Conduit Opening Size2.625 INCHES NOMINAL IN
Element Connection StyleMEDIUM SCREW SKIRTED
Heat Quantity1
Body StyleSCREW TYPE
Element Radiation SpectrumNONINFRARED
Effective Heating Length17.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5330-00-285-944612834A INTERCHANGEABLE
Seal,plain Encased
Brinkley Technology Group Llc Dba Hercules Manufacturing
Cross-Reference Index
Part NumberManufacturer
ARMT0-3305T2 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
275127 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
ARMT0-3305T2/275127 PRIMARY Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
Related Parts
5330-00-285-9446INTERCHANGEABLE
SEAL,PLAIN ENCASED
12834A

Frequently Asked Questions

What is NSN 4520-01-374-5420?

NSN 4520-01-374-5420 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 4520-01-374-5420?

NSN 4520-01-374-5420 has 3 cross-referenced part numbers: ARMT0-3305T2 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), 275127 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), ARMT0-3305T2/275127 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).

What NSN replaces 4520-01-374-5420?

There is 1 known substitute for 4520-01-374-5420: 5330-00-285-9446. Verify interchangeability with system specifications before substitution.

What are the specifications of ARMT0-3305T2/275127?

Key specifications for ARMT0-3305T2/275127: End Item Identification: W/S SUPPORT EQUIPMENT,B; Element Quantity: 3; Watt Density Rating: 24.0 PER SQUARE INCH SINGLE VOLTAGE; Length: 17.375 INCHES NOMINAL IN. 17 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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