PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BT21Push Button

Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co · NSN 5930-00-320-9977 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-320-9977 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-320-9977. Primary manufacturer part number: BT21.
Features
  • Push Button — FSC 5930
  • 7 verified cross-references
  • Primary manufacturer: Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Push Button, cataloged under National Stock Number 5930-00-320-9977, is classified within Federal Supply Class 5930 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co. This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5930-00-320-9977
Primary Part NumberBT21
Item NamePush Button
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerGuardian Electric Manufacturing Co Div Guardian Electric Mfg Co
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5930-00-649-8151192-200010-00 INTERCHANGEABLE
Push Button
Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co
4520-01-063-4837BT-21 INTERCHANGEABLE
Heating Element,electrical,nonim
Star Mfg Intl Toastwell
5120-01-367-3868BT-21 INTERCHANGEABLE
Puller,mechanical
Cornwell Quality Tools Company, the
Cross-Reference Index
Part NumberManufacturer
BT21 Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co (USA)
BSK-9-01552 Tracor Flight Systems Inc Sub of Tracor Inc (USA)
192-200021-00 Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co (USA)
BSK-9-01552 Bae Systems Technology Solutions & Services Inc. (USA)
192-200010-00 Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co (USA)
52A4160 Department of the Air Force (USA)
5905M0DIFIED Entech Controls Corp (USA)
Related Parts
5930-00-649-8151INTERCHANGEABLE
PUSH BUTTON
192-200010-00
4520-01-063-4837INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
BT-21
5120-01-367-3868INTERCHANGEABLE
PULLER,MECHANICAL
BT-21

Frequently Asked Questions

What is NSN 5930-00-320-9977?

NSN 5930-00-320-9977 is a Push Button, manufactured by Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co, classified under FSC 5930 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5930-00-320-9977?

NSN 5930-00-320-9977 has 7 cross-referenced part numbers: BT21 (Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co), BSK-9-01552 (Tracor Flight Systems Inc Sub of Tracor Inc), 192-200021-00 (Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co), BSK-9-01552 (Bae Systems Technology Solutions & Services Inc.), 192-200010-00 (Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co) and 2 more.

What NSN replaces 5930-00-320-9977?

There are 3 known substitutes for 5930-00-320-9977: 5930-00-649-8151, 4520-01-063-4837, 5120-01-367-3868. Verify interchangeability with system specifications before substitution.

What are the specifications of BT21?

Key specifications for BT21: Special Features: ROUND;0.344 IN. DIA;0.750 IN. H;SPLIT HUB;ALUMINUM ALLOY ANODIZED IN. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5930-00-320-9977 still in active supply?

NSN 5930-00-320-9977 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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