NSN 5920-01-399-4052 · NIIN 013994052 · Part number 345623-020
Littelfuse, Inc. · FSC 5920 — Fuses, Arrestors, Absorbers, and Protectors · FSG 59 — Electrical and Electronic Equipment Components · CAGE 75915
Government record, cited
NSN 5920-01-399-4052 — this item is cataloged by the U.S. Government under National Stock Number 5920-01-399-4052. Manufacturer of record part number: 345623-020.
Also searched as5920-01-399-4052 ·
5920013994052 ·
NIIN 013994052 ·
01-399-4052 ·
FSC 5920 Fuses, Arrestors, Absorbers, and Protectors · CAGE 75915 · 345623-020
Accommodated Fuse Length: 5.0 MILLIMETERS NOMINAL MM
Accommodated Ferrule Diameter: 20.0 MILLIMETERS NOMINAL MM
Fuse Terminal Type Accommodated: FERRULE
Surface Treatment: TIN CONTACT
Material: COPPER ALLOY CONTACT
Fuse Accommodation Quantity: 1
1 manufacturer part number on file
Identification
NSN: 5920-01-399-4052
NIIN: 013994052
FSC: 5920 — Fuses, Arrestors, Absorbers, and Protectors
FSG: 59 — Electrical and Electronic Equipment Components
Primary part number: 345623-020
Manufacturer: Littelfuse, Inc.
General Description
The Fuseholder Subassembly, cataloged under National Stock Number 5920-01-399-4052, is classified within Federal Supply Class 5920 (Fuses, Arrestors, Absorbers, and Protectors) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Littelfuse, Inc.. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5920-01-399-4052
Primary Part Number
345623-020
Item Name
Fuseholder Subassembly
FSC / FSG
5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors
Manufacturer
Littelfuse, Inc.
Status
ACTIVE
Accommodated Fuse Length
5.0 MILLIMETERS NOMINAL MM
Accommodated Ferrule Diameter
20.0 MILLIMETERS NOMINAL MM
Fuse Terminal Type Accommodated
FERRULE
Surface Treatment
TIN CONTACT
Material
COPPER ALLOY CONTACT
Fuse Accommodation Quantity
1
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 5920 — Fuses, Arrestors, Absorbers, and Protectors
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5920-00-001-3111
5920-00-001-3111 · Item name not on file
5920-00-001-3260
FUSE,CARTRIDGE
5920-00-001-3261
FUSE,CARTRIDGE
5920-00-001-3262
ARRESTER,ELECTRICAL SURGE
5920-00-001-3263
ARRESTER,ELECTRICAL SURGE
5920-00-001-3264
5920-00-001-3264 · Item name not on file
5920-00-001-3296
5920-00-001-3296 · Item name not on file
5920-00-001-3840
5920-00-001-3840 · Item name not on file
Frequently Asked Questions
What is NSN 5920-01-399-4052?
NSN 5920-01-399-4052 is a Fuseholder Subassembly, manufactured by Littelfuse, Inc., classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
What part numbers are listed for NSN 5920-01-399-4052?
NSN 5920-01-399-4052 has 1 manufacturer part number on file: 345623-020 (Littelfuse, Inc.).
What are the specifications of 345623-020?
Key specifications for 345623-020: Accommodated Fuse Length: 5.0 MILLIMETERS NOMINAL MM; Accommodated Ferrule Diameter: 20.0 MILLIMETERS NOMINAL MM; Fuse Terminal Type Accommodated: FERRULE; Special Features: KNOB AND FUSE CLIP TERMINAL,BAYONET MOUNTING TO FUSEHOLDDER,EXTRACTOR POST. 6 specifications are documented in the U.S. Government catalog.
Is NSN 5920-01-399-4052 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.