PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21254-1Fuse,cartridge

Hamilton Watch Co Inc · NSN 5920-00-820-8516 · FSC 5920 · No Item Name Available
Verified by PartsTable
NSN 5920-00-820-8516 — this item is cataloged by the U.S. Government under National Stock Number 5920-00-820-8516. Primary manufacturer part number: 21254-1.
Features
  • Fuse,cartridge — FSC 5920
  • Continuous Current Rating in Amps: 1.500
  • Maximum Voltage Rating in Volts: 125.0 AC AND 125.0 DC
  • Overall Diameter: 0.250 INCHES NOMINAL IN
  • Material: COPPER TERMINAL
  • Terminal Length: 1.500 INCHES NOMINAL IN
  • Circuit Over-Current Interruption Type: TIME DELAY
  • Features Provided: NONRENEWABLE FUSIBLE ELEMENT
Applications
  • Applications requiring Copper Terminal construction
General Description

The Fuse,cartridge, cataloged under National Stock Number 5920-00-820-8516, is classified within Federal Supply Class 5920 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Hamilton Watch Co Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5920-00-820-8516
Primary Part Number21254-1
Item NameFuse,cartridge
FSC / FSG5920 / 59 — No Item Name Available
ManufacturerHamilton Watch Co Inc
StatusCANCELLED
Continuous Current Rating in Amps1.500
Maximum Voltage Rating in Volts125.0 AC AND 125.0 DC
Overall Diameter0.250 INCHES NOMINAL IN
MaterialCOPPER TERMINAL
Terminal Length1.500 INCHES NOMINAL IN
Circuit Over-Current Interruption TypeTIME DELAY
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Interruption Indicator MethodVISIBLE ELEMENT
Circuit Over-Current Interruption Delay Time in Seconds12.0 500 PCT OF CURRENT RATING
Terminal Diameter0.032 INCHES NOMINAL IN
MaterialGLASS CASE
Surface TreatmentSOLDER TERMINAL
Body StyleTANGENT LEADS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
2915-00-296-6773212541 INTERCHANGEABLE
Parts Kit,pump,cure Dated
Eaton Corp Dba Eaton Aerospace Jackson
5950-00-841-060320N795-807910 INTERCHANGEABLE
Coil,radio Frequency
Viasys Respiratory Care Inc. Dba Biosys Healthcare
Cross-Reference Index
Part NumberManufacturer
21254-1 PRIMARY Hamilton Watch Co Inc (USA)
31801.5 Littelfuse, Inc. (USA)
31801-5 Littelfuse, Inc. (USA)
21254-1 Littelfuse, Inc. (USA)
Related Parts
2915-00-296-6773INTERCHANGEABLE
PARTS KIT,PUMP,CURE DATED
212541
5950-00-841-0603INTERCHANGEABLE
COIL,RADIO FREQUENCY
20N795-807910

Frequently Asked Questions

What is NSN 5920-00-820-8516?

NSN 5920-00-820-8516 is a Fuse,cartridge, manufactured by Hamilton Watch Co Inc, classified under FSC 5920 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5920-00-820-8516?

NSN 5920-00-820-8516 has 4 cross-referenced part numbers: 21254-1 (Hamilton Watch Co Inc), 31801.5 (Littelfuse, Inc.), 31801-5 (Littelfuse, Inc.), 21254-1 (Littelfuse, Inc.).

What NSN replaces 5920-00-820-8516?

There are 2 known substitutes for 5920-00-820-8516: 2915-00-296-6773, 5950-00-841-0603. Verify interchangeability with system specifications before substitution.

What are the specifications of 21254-1?

Key specifications for 21254-1: Continuous Current Rating in Amps: 1.500; Overall Length: 1.250 INCHES NOMINAL IN; Maximum Voltage Rating in Volts: 125.0 AC AND 125.0 DC; Overall Diameter: 0.250 INCHES NOMINAL IN. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5920-00-820-8516 still in active supply?

NSN 5920-00-820-8516 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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