PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BT-21Heating Element,electrical,nonim

Star Mfg Intl Toastwell · NSN 4520-01-063-4837 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-01-063-4837 — this item is cataloged by the U.S. Government under National Stock Number 4520-01-063-4837. Primary manufacturer part number: BT-21.
Features
  • Heating Element,electrical,nonim — FSC 4520
  • Voltage in Volts and Current Type: 230.0 AC SECOND VOLTAGE
  • Voltage in Volts and Current Type: 120.0 AC FIRST VOLTAGE
  • 1 verified cross-reference
  • Primary manufacturer: Star Mfg Intl Toastwell
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heating Element,electrical,nonim, cataloged under National Stock Number 4520-01-063-4837, 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 Star Mfg Intl Toastwell. Government technical data includes 2 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4520-01-063-4837
Primary Part NumberBT-21
Item NameHeating Element,electrical,nonim
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerStar Mfg Intl Toastwell
StatusACTIVE
Voltage in Volts and Current Type230.0 AC SECOND VOLTAGE
Voltage in Volts and Current Type120.0 AC FIRST VOLTAGE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5930-00-320-9977 INTERCHANGEABLE
Push Button
5120-01-367-3868BT-21 INTERCHANGEABLE
Puller,mechanical
Cornwell Quality Tools Company, the
Cross-Reference Index
Part NumberManufacturer
BT-21 PRIMARY Star Mfg Intl Toastwell (USA)
Related Parts
5930-00-320-9977INTERCHANGEABLE
PUSH BUTTON
5120-01-367-3868INTERCHANGEABLE
PULLER,MECHANICAL
BT-21

Frequently Asked Questions

What is NSN 4520-01-063-4837?

NSN 4520-01-063-4837 is a Heating Element,electrical,nonim, manufactured by Star Mfg Intl Toastwell, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-01-063-4837?

NSN 4520-01-063-4837 has 1 cross-referenced part number: BT-21 (Star Mfg Intl Toastwell).

What NSN replaces 4520-01-063-4837?

There are 2 known substitutes for 4520-01-063-4837: 5930-00-320-9977, 5120-01-367-3868. Verify interchangeability with system specifications before substitution.

What are the specifications of BT-21?

Key specifications for BT-21: Voltage in Volts and Current Type: 230.0 AC SECOND VOLTAGE; End Item Identification: TOASTSWELL MODELS BTM-2 AND BTM-4 TOASTER; Voltage in Volts and Current Type: 120.0 AC FIRST VOLTAGE. 3 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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