The Fuseholder,block, cataloged under National Stock Number 5920-00-028-4337, 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 L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-00-028-4337 |
| Primary Part Number | SA1031-1-1203 |
| Item Name | Fuseholder,block |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications |
| Status | ACTIVE |
| Accommodated Fuse Length | 0.422 INCHES NOMINAL IN |
| Mounting Hole Height | 0.855 INCHES MINIMUM AND 0.865 INCHES MAXIMUM IN |
| Mounting Hole Quantity | 2 |
| Body Style | BLOCK-SIGNAL INDICATING |
| Internal Circuit Configuration and Pole Quantity | 2 POLE, MAINLINE, FUSED |
| Mounting Hole Style | PANEL MOUNTING W/2 HOLES |
| Coating Method | PLATED CONTACT |
| Body Height | 0.625 INCHES NOMINAL IN |
| Center to Center Distance Between Outside Mounting Holes Along Length | 1.210 INCHES MINIMUM AND 1.215 INCHES MAXIMUM IN |
| Voltage in Volts | 300.0 |
| Mounting Hole Diameter | 0.150 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN |
| Accommodated Fuse Width | 0.375 INCHES NOMINAL IN |
| Mounting Hole Width | 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Accommodated Fuse Thickness | 0.125 INCHES NOMINAL IN |
| Fuse Terminal Type Accommodated | FERRULE |
| Surface Treatment | NICKEL CONTACT |
| Current Carrying Rating in Amps | 10.0 |
| Material | COPPER ALLOY CONTACT |
| Terminal Type and Quantity | 2 KNIFE BLADE |
| 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 |
|---|---|
| SA1031-1-1203 PRIMARY | L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications (USA) |
| Reference | Meaning |
|---|---|
| HLT | 5/1 Secondary reference Cooper Bussmann, Llc Dba Cooper Industries |
NSN 5920-00-028-4337 is a Fuseholder,block, manufactured by L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-00-028-4337 has 1 manufacturer part number on file: SA1031-1-1203 (L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications).
2 possible matches (shared part number, not a government interchangeability claim): 5910-00-666-5924, 5920-00-968-3238. Verify interchangeability with system specifications before substitution.
Key specifications for SA1031-1-1203: Accommodated Fuse Length: 0.422 INCHES NOMINAL IN; Mounting Hole Height: 0.855 INCHES MINIMUM AND 0.865 INCHES MAXIMUM IN; Mounting Hole Quantity: 2; Overall Height: 1.000 INCHES NOMINAL IN. 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.