The Fuse,cartridge, cataloged under National Stock Number 5920-01-183-6191, 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 San-O Industrial Corp. Government technical data includes 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-01-183-6191 |
| Primary Part Number | SM4-1A |
| Item Name | Fuse,cartridge |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | San-O Industrial Corp |
| Status | ACTIVE |
| Continuous Current Rating in Amps | 1.000 |
| Fragility Factor | MODERATELY RUGGED |
| Terminal Diameter | 0.65 MILLIMETERS NOMINAL MM |
| Body Style | PLUG-IN TYPE |
| Overall Diameter | 6.6 MILLIMETERS NOMINAL MM |
| Terminal Length | 4.4 MILLIMETERS NOMINAL MM |
| Center to Center Distance Between Mounting Facilities Parallel to Diameter | 2.54 MILLIMETERS MINIMUM AND 2.66 MILLIMETERS MAXIMUM MM |
| Interruption Indicator Method | VISIBLE ELEMENT |
| Features Provided | NONRENEWABLE FUSIBLE ELEMENT |
| Body Length | 7.4 MILLIMETERS NOMINAL MM |
| Surface Treatment | SOLDER TERMINAL |
| Maximum Voltage Rating in Volts | 125.0 AC AND 125.0 DC |
| Material | CERAMIC CASE |
| Material | COPPER TERMINAL |
| Circuit Over-Current Interruption Type | NORMAL INSTANTANEOUS |
| 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 |
|---|---|
| SM4-1A | San-O Industrial Corp (USA) |
| Reference | Meaning |
|---|---|
| 159-0116-00 | 3/2 Design control — primary reference U.S. Government activity |
| 5920PL1390360 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| SM1-1A | 5/9 Secondary reference San-O Industrial Corp |
NSN 5920-01-183-6191 is a Fuse,cartridge, manufactured by San-O Industrial Corp, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-01-183-6191 has 1 manufacturer part number on file: SM4-1A (San-O Industrial Corp).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-661-8438. Verify interchangeability with system specifications before substitution.
Key specifications for SM4-1A: Continuous Current Rating in Amps: 1.000; Fragility Factor: MODERATELY RUGGED; Terminal Diameter: 0.65 MILLIMETERS NOMINAL MM; Body Style: PLUG-IN TYPE. 15 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.