PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1239Fuse,cartridge

Micro Devices Corp Sub of Emerson Electric Co · NSN 5920-01-042-5056 · FSC 5920 · No Item Name Available
Verified by PartsTable
NSN 5920-01-042-5056 — this item is cataloged by the U.S. Government under National Stock Number 5920-01-042-5056. Primary manufacturer part number: 1239.
Features
  • Fuse,cartridge — FSC 5920
  • Surface Treatment: SILVER TERMINAL
  • Terminal Length: 0.810 INCHES NOMINAL IN
  • Precious Material and Location: TERMINALS SILVER AND CASE SILVER
  • Material: COPPER TERMINAL
  • Continuous Current Rating in Amps: 18.000
  • Precious Material: SILVER
  • Circuit Over-Current Interruption Type: NORMAL INSTANTANEOUS
Applications
  • Applications requiring Copper Terminal construction
General Description

The Fuse,cartridge, cataloged under National Stock Number 5920-01-042-5056, 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 Micro Devices Corp Sub of Emerson Electric Co. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5920-01-042-5056
Primary Part Number1239
Item NameFuse,cartridge
FSC / FSG5920 / 59 — No Item Name Available
ManufacturerMicro Devices Corp Sub of Emerson Electric Co
StatusACTIVE
Surface TreatmentSILVER TERMINAL
Terminal Length0.810 INCHES NOMINAL IN
Precious Material and LocationTERMINALS SILVER AND CASE SILVER
MaterialCOPPER TERMINAL
Continuous Current Rating in Amps18.000
Precious MaterialSILVER
Circuit Over-Current Interruption TypeNORMAL INSTANTANEOUS
Interruption Indicator MethodOPAQUE BODY
Overall Diameter0.158 INCHES NOMINAL IN
Maximum Voltage Rating in Volts125.0 AC AND 125.0 DC
Terminal Diameter0.040 INCHES NOMINAL IN
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Body StylePIGTAIL TYPE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6145-00-066-8640 INTERCHANGEABLE
Braid,wire
5935-00-254-5131CW123U INTERCHANGEABLE
Cover,electrical Connector
Joint Electronics Type Designation System
2520-00-377-88301-2-39 INTERCHANGEABLE
Yoke,universal Joint,vehicular
Dana Corp Spicer Transmission Div
4540-00-408-9409 INTERCHANGEABLE
Heating Element
4320-00-420-68311239 INTERCHANGEABLE
Valve,slide,pump
Curtiss-Wright Electro-Mechanical Corporation Div Epd
6145-00-475-69097689501 INTERCHANGEABLE
Braid,wire
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
4310-00-521-6155 INTERCHANGEABLE
Screen,air Cleaner
5910-00-829-27331846F2-60 INTERCHANGEABLE
Capacitor,variable,air Dielectri
Viking Technologies, Ltd.
5360-00-974-7736 INTERCHANGEABLE
Spring,helical,compression
7510-01-060-5891 INTERCHANGEABLE
Pencil
Cross-Reference Index
Part NumberManufacturer
1239 PRIMARY Micro Devices Corp Sub of Emerson Electric Co (USA)
0D1000 Micro Devices Corp Sub of Emerson Electric Co (USA)
Related Parts
6145-00-066-8640INTERCHANGEABLE
BRAID,WIRE
5935-00-254-5131INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
CW123U
2520-00-377-8830INTERCHANGEABLE
YOKE,UNIVERSAL JOINT,VEHICULAR
1-2-39
4540-00-408-9409INTERCHANGEABLE
HEATING ELEMENT
4320-00-420-6831INTERCHANGEABLE
VALVE,SLIDE,PUMP
1239
6145-00-475-6909INTERCHANGEABLE
BRAID,WIRE
7689501
4310-00-521-6155INTERCHANGEABLE
SCREEN,AIR CLEANER
5910-00-829-2733INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
1846F2-60
5360-00-974-7736INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
7510-01-060-5891INTERCHANGEABLE
PENCIL
5325-01-139-0638INTERCHANGEABLE
RING,RETAINING
1239
6515-01-156-3390INTERCHANGEABLE
SURGICAL PACK,DISPOSABLE

Frequently Asked Questions

What is NSN 5920-01-042-5056?

NSN 5920-01-042-5056 is a Fuse,cartridge, manufactured by Micro Devices Corp Sub of Emerson Electric Co, classified under FSC 5920 (No Item Name Available). Status: active.

What are the part numbers for NSN 5920-01-042-5056?

NSN 5920-01-042-5056 has 2 cross-referenced part numbers: 1239 (Micro Devices Corp Sub of Emerson Electric Co), 0D1000 (Micro Devices Corp Sub of Emerson Electric Co).

What NSN replaces 5920-01-042-5056?

There are 12 known substitutes for 5920-01-042-5056: 6145-00-066-8640, 5935-00-254-5131, 2520-00-377-8830 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1239?

Key specifications for 1239: Surface Treatment: SILVER TERMINAL; Terminal Length: 0.810 INCHES NOMINAL IN; Precious Material and Location: TERMINALS SILVER AND CASE SILVER; Material: COPPER TERMINAL. 15 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com