PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

273-250Fuse,cartridge

Littelfuse, Inc. · NSN 5920-00-926-0621 · FSC 5920 · No Item Name Available
Verified by PartsTable
NSN 5920-00-926-0621 — this item is cataloged by the U.S. Government under National Stock Number 5920-00-926-0621. Primary manufacturer part number: 273-250.
Features
  • Fuse,cartridge — FSC 5920
  • Test Data Document: 81349-MIL-F-23419 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Specification/standard Data: 81349-MIL-F-23419/2J GOVERNMENT SPECIFICATION
  • Terminal Length: 0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
  • Maximum Voltage Rating in Volts: 125.0 AC AND 125.0 DC
  • Material: COPPER TERMINAL
  • Terminal Diameter: 0.024 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
  • Circuit Over-Current Interruption Type: NORMAL INSTANTANEOUS
Applications
  • Applications requiring Copper Terminal construction
General Description

The Fuse,cartridge, cataloged under National Stock Number 5920-00-926-0621, 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 Littelfuse, Inc.. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 4 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
NSN5920-00-926-0621
Primary Part Number273-250
Item NameFuse,cartridge
FSC / FSG5920 / 59 — No Item Name Available
ManufacturerLittelfuse, Inc.
StatusCANCELLED
Test Data Document81349-MIL-F-23419 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Specification/standard Data81349-MIL-F-23419/2J GOVERNMENT SPECIFICATION
Terminal Length0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
Maximum Voltage Rating in Volts125.0 AC AND 125.0 DC
MaterialCOPPER TERMINAL
Terminal Diameter0.024 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN
Circuit Over-Current Interruption TypeNORMAL INSTANTANEOUS
Overall Diameter0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
Body Length0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN
Continuous Current Rating in Amps0.250
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Interruption Indicator MethodVISIBLE ELEMENT
Center to Center Distance Between Mounting Facilities Parallel to Diameter0.100 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
Surface TreatmentNICKEL TERMINAL
Body StylePLUG-IN TYPE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5305-00-922-7994AES01C750B50AW9A91 INTERCHANGEABLE
Screw,cap,hexagon Head
The American Society of Mechanical Engineers
4320-01-121-4716 INTERCHANGEABLE
Pump,hydraulic
Cross-Reference Index
Part NumberManufacturer
273-250 Littelfuse, Inc. (USA)
MILF23419-2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
FM02A125V1/4A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILF2349A2EFM02-1-4A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M23419-2-010 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-23419/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
3522 500 23967 Thales Nederland (NLD)
FM02125V1-4A Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5305-00-922-7994INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
AES01C750B50AW9A91
4320-01-121-4716INTERCHANGEABLE
PUMP,HYDRAULIC

Frequently Asked Questions

What is NSN 5920-00-926-0621?

NSN 5920-00-926-0621 is a Fuse,cartridge, manufactured by Littelfuse, Inc., classified under FSC 5920 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5920-00-926-0621?

NSN 5920-00-926-0621 has 8 cross-referenced part numbers: 273-250 (Littelfuse, Inc.), MILF23419-2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), FM02A125V1/4A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILF2349A2EFM02-1-4A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M23419-2-010 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 3 more.

What NSN replaces 5920-00-926-0621?

There are 2 known substitutes for 5920-00-926-0621: 5305-00-922-7994, 4320-01-121-4716. Verify interchangeability with system specifications before substitution.

What are the specifications of 273-250?

Key specifications for 273-250: Test Data Document: 81349-MIL-F-23419 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).; Specification/standard Data: 81349-MIL-F-23419/2J GOVERNMENT SPECIFICATION; Terminal Length: 0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN; Maximum Voltage Rating in Volts: 125.0 AC AND 125.0 DC. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5920-00-926-0621 still in active supply?

NSN 5920-00-926-0621 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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