The Fuseholder,block, cataloged under National Stock Number 5920-00-993-8979, 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 23 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5920-00-993-8979 |
| Primary Part Number | MILF21346-3 |
| Item Name | Fuseholder,block |
| FSC / FSG | 5920 / 59 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | CANCELLED |
| Accommodated Ferrule Diameter | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | QQ-C-530 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE CONTACT |
| Voltage in Volts | 250.0 |
| Base Thickness | 0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-M-14, TYPE MDG MIL SPEC SINGLE MATERIAL RESPONSE AND MIL-M-14, TYPE SDG MIL SPEC SINGLE MATERIAL RESPONSE AND MIL-M-14, TYPE MME MIL SPEC SINGLE MATERIAL RESPONSE AND MIL-M-14, TYPE MSG MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Material | PLASTIC DIALLYL PHTHALATE AND SILICA AND PLASTIC POLYHEXAMETHYLENE ADIPAMIDE AND GLASS OR PLASTIC POLYCAPROLACTAM AND GLASS OR PLASTIC POLYHEXAMETHYLENE SEBACAMIDE AND GLASS AND PLASTIC MELAMINE AND SILICA AND PLASTIC SILICONE AND GLASS FIBER BODY |
| Surface Treatment | COPPER AND TIN AND ZINC CONTACT |
| Material Document and Classification | QQ-C-530 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE TERMINAL |
| Internal Circuit Configuration and Pole Quantity | 2 POLE, MAINLINE, FUSED |
| Material | COPPER ALLOY 172 OR COPPER ALLOY 173 OR COPPER ALLOY 170 OR COPPER ALLOY 172 TERMINAL |
| Surface Treatment | SOLDER DIP AND TIN TERMINAL |
| Coating Method | PLATED CONTACT |
| Test Data Document | 81349-MIL-F-21346 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.). |
| Current Carrying Rating in Amps | 20.0 |
| Terminal Type and Quantity | 4 TAB, SOLDER LUG |
| Mounting Hole Quantity | 1 |
| Fuse Accommodation Quantity | 2 |
| Material | COPPER ALLOY 172 OR COPPER ALLOY 173 OR COPPER ALLOY 170 OR COPPER ALLOY 172 CONTACT |
| Fuse Terminal Type Accommodated | FERRULE |
| Body Style | CLIP CONNECTED TYPE |
| Mounting Hole Diameter | 0.138 INCHES NOMINAL IN |
| Accommodated Fuse Length | 1.250 INCHES NOMINAL IN |
| Mounting Hole Style | ONE HOLE MOUNTING |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MILF21346-3 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| AA55518/2-014 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| FH23BM | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| AA55518/02-014 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| FH23BM | Cooper Bussmann, Llc Dba Cooper Industries (USA) |
| ASC1532315 | Asc Pty Ltd (AUS) |
| M21346/3-27 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| A-A-55518/2 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
NSN 5920-00-993-8979 is a Fuseholder,block, 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.
NSN 5920-00-993-8979 has 8 cross-referenced part numbers: MILF21346-3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AA55518/2-014 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), FH23BM (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AA55518/02-014 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), FH23BM (Cooper Bussmann, Llc Dba Cooper Industries) and 3 more.
There are 11 known substitutes for 5920-00-993-8979: 5920-00-248-8882, 5920-00-280-4037, 5920-00-284-9206 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for MILF21346-3: Accommodated Ferrule Diameter: 0.250 INCHES NOMINAL IN; Overall Width: 1.100 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN; Material Document and Classification: QQ-C-530 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE CONTACT; Voltage in Volts: 250.0. 26 total characteristics are documented in the Federal Logistics Information System.
NSN 5920-00-993-8979 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.