The Fuseholder,block, cataloged under National Stock Number 5920-01-646-8531, 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 13 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.
| Parameter | Value |
|---|---|
| NSN | 5920-01-646-8531 |
| Primary Part Number | 0125 0003H |
| Item Name | Fuseholder,block |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | Littelfuse, Inc. |
| Status | ACTIVE |
| Accommodated Fuse Length | 10.3188 MILLIMETERS NOMINAL MM |
| Mounting Hole Quantity | 4 |
| Body Style | TWIN-CLIP STYLE |
| Mounting Hole Style | IN-LINE ALONG THE LENGTH |
| Center to Center Distance Between Outside Mounting Holes Along Length | 41.76 MILLIMETERS NOMINAL MM |
| Mounting Hole Diameter | 1.10 MILLIMETERS NOMINAL MM |
| Accommodated Ferrule Diameter | 10.3188 MILLIMETERS NOMINAL MM |
| Fuse Terminal Type Accommodated | FERRULE |
| Surface Treatment | TIN CONTACT |
| Current Carrying Rating in Amps | 30.0 |
| Material | COPPER ALLOY CONTACT |
| Terminal Type and Quantity | 2 FERRULE |
| Fuse Accommodation Quantity | 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 0125 0003H PRIMARY | Littelfuse, Inc. (USA) |
NSN 5920-01-646-8531 is a Fuseholder,block, manufactured by Littelfuse, Inc., classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-01-646-8531 has 1 manufacturer part number on file: 0125 0003H (Littelfuse, Inc.).
Key specifications for 0125 0003H: Accommodated Fuse Length: 10.3188 MILLIMETERS NOMINAL MM; Mounting Hole Quantity: 4; Overall Height: 18.50 MILLIMETERS NOMINAL MM; Body Style: TWIN-CLIP STYLE. 13 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.