PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

255513Heating Element,electrical,nonim

Chromalox Inc Dba Chromalox Precision Heat and Control, Inc · NSN 4520-01-047-3634 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-047-3634 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-047-3634. Primary manufacturer part number: 255513.
Features
  • Heating Element,electrical,nonim — FSC 4520
  • Mounting Method Style: SLOT OR HOLE TYPE MOUNTING FACILITY
  • Watt Density Rating: 24.0 PER SQUARE INCH SINGLE VOLTAGE
  • Voltage in Volts and Current Type: 120.0 AC SINGLE VOLTAGE
  • Thread Series Designator: UNF STUD
  • Phase: SINGLE SINGLE VOLTAGE
  • Thread Quantity: 32.0 PER INCH STUD
  • Maximum Wattage Rating in Watts: 400.0 SINGLE VOLTAGE
Applications
  • Applications requiring Iron Rust Resisting Sheath construction
General Description

The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-047-3634, 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 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 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
NSN4520-01-047-3634
Primary Part Number255513
Item NameHeating Element,electrical,nonim
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerChromalox Inc Dba Chromalox Precision Heat and Control, Inc
StatusACTIVE
Mounting Method StyleSLOT OR HOLE TYPE MOUNTING FACILITY
Watt Density Rating24.0 PER SQUARE INCH SINGLE VOLTAGE
Voltage in Volts and Current Type120.0 AC SINGLE VOLTAGE
Thread Series DesignatorUNF STUD
PhaseSINGLE SINGLE VOLTAGE
Thread Quantity32.0 PER INCH STUD
Maximum Wattage Rating in Watts400.0 SINGLE VOLTAGE
MaterialIRON RUST RESISTING SHEATH
Frequency in Hertz60.0
Element Quantity1
Nominal Thread Size0.190 INCHES STUD IN
Terminal Length0.406 INCHES NOMINAL IN
Hole or Slot Quantity1
Element Connection StyleSTUD TYPE
Outside Diameter3.250 INCHES NOMINAL IN
Heat Quantity1
Terminal Quantity2
Body StyleSINGLE HEAT RING
Element Radiation SpectrumNONINFRARED
Hole Diameter0.203 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5985-01-009-2034255513 INTERCHANGEABLE
Waveguide Assembly
Raytheon Company Dba Raytheon
Cross-Reference Index
Part NumberManufacturer
HSP-31 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
255513 PRIMARY Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA)
Related Parts
5985-01-009-2034INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
255513

Frequently Asked Questions

What is NSN 4520-01-047-3634?

NSN 4520-01-047-3634 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 4520-01-047-3634?

NSN 4520-01-047-3634 has 2 cross-referenced part numbers: HSP-31 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), 255513 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).

What NSN replaces 4520-01-047-3634?

There is 1 known substitute for 4520-01-047-3634: 5985-01-009-2034. Verify interchangeability with system specifications before substitution.

What are the specifications of 255513?

Key specifications for 255513: Mounting Method Style: SLOT OR HOLE TYPE MOUNTING FACILITY; Watt Density Rating: 24.0 PER SQUARE INCH SINGLE VOLTAGE; Voltage in Volts and Current Type: 120.0 AC SINGLE VOLTAGE; Thread Series Designator: UNF STUD. 20 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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