The Fuseholder,block, cataloged under National Stock Number 5920-00-443-4081, is classified within Federal Supply Class 5920 (Fuses, Arrestors, Absorbers, and Protectors) of the Electrical and Electronic Equipment Components group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-00-443-4081 |
| Item Name | Fuseholder,block |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Status | ACTIVE |
| Accommodated Fuse Length | 1.250 INCHES NOMINAL IN |
| Mounting Hole Quantity | 1 |
| Body Style | CLIP CONNECTED TYPE |
| Internal Circuit Configuration and Pole Quantity | 5 POLE, MAINLINE, FUSED |
| Mounting Hole Style | ONE HOLE MOUNTING |
| Coating Method | PLATED CONTACT |
| Voltage in Volts | 250.0 |
| Material Document and Classification | QQ-C-530 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE CONTACT |
| 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 |
| Mounting Hole Diameter | 0.138 INCHES NOMINAL IN |
| Accommodated Ferrule Diameter | 0.250 INCHES NOMINAL IN |
| Fuse Terminal Type Accommodated | FERRULE |
| Surface Treatment | COPPER AND TIN AND ZINC CONTACT |
| Current Carrying Rating in Amps | 30.0 |
| 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.). |
| Base Thickness | 0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| 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 |
| Material | COPPER ALLOY 172 OR COPPER ALLOY 173 OR COPPER ALLOY 170 OR COPPER ALLOY 172 CONTACT |
| Terminal Type and Quantity | 10 SCREW |
| Fuse Accommodation Quantity | 5 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| M21346/3-18 | 2/2 Government specification standardization U.S. Government activity |
| FH22GM | 5/1 Secondary reference U.S. Government activity |
| MIL-F-21346/3 | 4/1 Identification reference U.S. Government activity |
NSN 5920-00-443-4081 is a Fuseholder,block, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
Key specifications for 5920-00-443-4081: Accommodated Fuse Length: 1.250 INCHES NOMINAL IN; Mounting Hole Quantity: 1; Overall Height: 0.680 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN; Body Style: CLIP CONNECTED TYPE. 20 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
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.