PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21801.6Fuse,cartridge

Littelfuse, Inc. · NSN 5920-01-122-4181 · FSC 5920 · No Item Name Available
Verified by PartsTable
NSN 5920-01-122-4181 — this item is cataloged by the U.S. Government under National Stock Number 5920-01-122-4181. Primary manufacturer part number: 21801.6.
Features
  • Fuse,cartridge — FSC 5920
  • Circuit Over-Current Interruption Delay Time in Seconds: 0.3 400 PCT OF CURRENT RATING AND 3.0 400 PCT OF CURRENT RATING
  • Features Provided: NONRENEWABLE FUSIBLE ELEMENT
  • Continuous Current Rating in Amps: 1.600
  • Overall Diameter: 0.197 INCHES NOMINAL IN
  • Circuit Over-Current Interruption Type: TIME DELAY
  • Material: COPPER TERMINAL
  • Maximum Voltage Rating in Volts: 250.0 AC AND 250.0 DC
Applications
  • Applications requiring Copper Terminal construction
General Description

The Fuse,cartridge, cataloged under National Stock Number 5920-01-122-4181, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5920-01-122-4181
Primary Part Number21801.6
Item NameFuse,cartridge
FSC / FSG5920 / 59 — No Item Name Available
ManufacturerLittelfuse, Inc.
StatusCANCELLED
Circuit Over-Current Interruption Delay Time in Seconds0.3 400 PCT OF CURRENT RATING AND 3.0 400 PCT OF CURRENT RATING
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Continuous Current Rating in Amps1.600
Overall Diameter0.197 INCHES NOMINAL IN
Circuit Over-Current Interruption TypeTIME DELAY
MaterialCOPPER TERMINAL
Maximum Voltage Rating in Volts250.0 AC AND 250.0 DC
Interruption Indicator MethodVISIBLE ELEMENT
MaterialGLASS CASE
Body StyleTUBE TYPE
Surface TreatmentNICKEL TERMINAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
4820-00-247-7190216201 INTERCHANGEABLE
Valve,flow Control
Maytag Corporation Dba Maytag Appliancessales
5330-00-547-38601386-149 INTERCHANGEABLE
Seal
Woodward, Inc.
2530-00-571-6424 INTERCHANGEABLE
Fitting,double Outl
4710-01-066-2980213016 INTERCHANGEABLE
Tube Assembly,metal
Cummins Inc.
6515-01-605-33809032G INTERCHANGEABLE
Suture,nonabsorbable,surgical
Ethicon Us Llc Div Ethicon
Cross-Reference Index
Part NumberManufacturer
21301.6 Littelfuse, Inc. (USA)
21801.6 PRIMARY Littelfuse, Inc. (USA)
195195-1.6A Wickmann Usa Inc (USA)
2110-0495 Hewlett-Packard Company Dba HP (USA)
213016 Littelfuse, Inc. (USA)
ASC1562230 Asc Pty Ltd (AUS)
Related Parts
4820-00-247-7190INTERCHANGEABLE
VALVE,FLOW CONTROL
216201
5330-00-547-3860INTERCHANGEABLE
SEAL
1386-149
2530-00-571-6424INTERCHANGEABLE
FITTING,DOUBLE OUTL
4710-01-066-2980INTERCHANGEABLE
TUBE ASSEMBLY,METAL
213016
6515-01-605-3380INTERCHANGEABLE
SUTURE,NONABSORBABLE,SURGICAL
9032G

Frequently Asked Questions

What is NSN 5920-01-122-4181?

NSN 5920-01-122-4181 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 5920-01-122-4181?

NSN 5920-01-122-4181 has 6 cross-referenced part numbers: 21301.6 (Littelfuse, Inc.), 21801.6 (Littelfuse, Inc.), 195195-1.6A (Wickmann Usa Inc), 2110-0495 (Hewlett-Packard Company Dba HP), 213016 (Littelfuse, Inc.) and 1 more.

What NSN replaces 5920-01-122-4181?

There are 5 known substitutes for 5920-01-122-4181: 4820-00-247-7190, 5330-00-547-3860, 2530-00-571-6424 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21801.6?

Key specifications for 21801.6: Circuit Over-Current Interruption Delay Time in Seconds: 0.3 400 PCT OF CURRENT RATING AND 3.0 400 PCT OF CURRENT RATING; Overall Length: 0.787 INCHES NOMINAL IN; Features Provided: NONRENEWABLE FUSIBLE ELEMENT; Continuous Current Rating in Amps: 1.600. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5920-01-122-4181 still in active supply?

NSN 5920-01-122-4181 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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