PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

F21B250V350AFuse,cartridge

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5920-00-281-0168 · FSC 5920 · No Item Name Available
Verified by PartsTable
NSN 5920-00-281-0168 — this item is cataloged by the U.S. Government under National Stock Number 5920-00-281-0168. Primary manufacturer part number: F21B250V350A.
Features
  • Fuse,cartridge — FSC 5920
  • Circuit Over-Current Interruption Type: TIME DELAY
  • Surface Treatment: NICKEL TERMINAL
  • Overall Diameter: 2.406 INCHES MAXIMUM IN
  • Terminal Thickness: 0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
  • Terminal Length: 1.875 INCHES MINIMUM IN
  • Circuit Over-Current Interruption Delay Time in Seconds: 10.0 400 PCT OF CURRENT RATING
  • Continuous Current Rating in Amps: 350.000
Applications
  • Applications requiring Copper Terminal construction
General Description

The Fuse,cartridge, cataloged under National Stock Number 5920-00-281-0168, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5920-00-281-0168
Primary Part NumberF21B250V350A
Item NameFuse,cartridge
FSC / FSG5920 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Circuit Over-Current Interruption TypeTIME DELAY
Surface TreatmentNICKEL TERMINAL
Overall Diameter2.406 INCHES MAXIMUM IN
Terminal Thickness0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
Terminal Length1.875 INCHES MINIMUM IN
Circuit Over-Current Interruption Delay Time in Seconds10.0 400 PCT OF CURRENT RATING
Continuous Current Rating in Amps350.000
Interruption Indicator MethodOPAQUE BODY
MaterialCOPPER TERMINAL
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Maximum Voltage Rating in Volts250.0 AC AND 250.0 DC
MaterialFIBER CASE
Specification/standard Data81349-MIL-F-15160/21 GOVERNMENT SPECIFICATION
Test Data Document81349-MIL-F-15160 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.).
Body StyleKNIFE BLADE TYPE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
5920-00-190-7293FRNR400 INTERCHANGEABLE
Fuse,cartridge
Cooper Bussmann, Llc Dba Cooper Industries
5920-00-243-3714 INTERCHANGEABLE
Fuse,cartridge
5920-00-243-3756 INTERCHANGEABLE
Fuse,cartridge
5920-00-243-3757 INTERCHANGEABLE
Fuse,cartridge
5920-00-721-0721 INTERCHANGEABLE
Fuse,cartridge
5920-00-823-0688 INTERCHANGEABLE
Fuse,cartridge
5920-00-984-3137 INTERCHANGEABLE
Fuse,cartridge
5920-01-224-6161 INTERCHANGEABLE
Fuse,cartridge
5920-01-252-0614 INTERCHANGEABLE
Fuse,cartridge
5920-01-259-3083 INTERCHANGEABLE
Fuse,cartridge
Cross-Reference Index
Part NumberManufacturer
F21B250V350A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-F-15160/21 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
208418-000 Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc (USA)
MIL-PRF-15160/21 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
208418-000 Stromberg-Carlson Corp a Plessey Telecommunications Co (USA)
FRNR 350 Cooper Bussmann, Llc Dba Cooper Industries (USA)
ECN350 Cooper Bussmann, Llc Dba Cooper Industries (USA)
Related Parts
5920-00-190-7293INTERCHANGEABLE
FUSE,CARTRIDGE
FRNR400
5920-00-243-3714INTERCHANGEABLE
FUSE,CARTRIDGE
5920-00-243-3756INTERCHANGEABLE
FUSE,CARTRIDGE
5920-00-243-3757INTERCHANGEABLE
FUSE,CARTRIDGE
5920-00-721-0721INTERCHANGEABLE
FUSE,CARTRIDGE
5920-00-823-0688INTERCHANGEABLE
FUSE,CARTRIDGE
5920-00-984-3137INTERCHANGEABLE
FUSE,CARTRIDGE
5920-01-224-6161INTERCHANGEABLE
FUSE,CARTRIDGE
5920-01-252-0614INTERCHANGEABLE
FUSE,CARTRIDGE
5920-01-259-3083INTERCHANGEABLE
FUSE,CARTRIDGE

Frequently Asked Questions

What is NSN 5920-00-281-0168?

NSN 5920-00-281-0168 is a Fuse,cartridge, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5920 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5920-00-281-0168?

NSN 5920-00-281-0168 has 7 cross-referenced part numbers: F21B250V350A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-F-15160/21 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 208418-000 (Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc), MIL-PRF-15160/21 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 208418-000 (Stromberg-Carlson Corp a Plessey Telecommunications Co) and 2 more.

What NSN replaces 5920-00-281-0168?

There are 10 known substitutes for 5920-00-281-0168: 5920-00-190-7293, 5920-00-243-3714, 5920-00-243-3756 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of F21B250V350A?

Key specifications for F21B250V350A: Circuit Over-Current Interruption Type: TIME DELAY; Surface Treatment: NICKEL TERMINAL; Overall Diameter: 2.406 INCHES MAXIMUM IN; Terminal Thickness: 0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5920-00-281-0168 still in active supply?

NSN 5920-00-281-0168 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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