The Arrester,electrical Surge, cataloged under National Stock Number 5920-01-555-0485, 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 Oeco, Llc Dba Pacific Scientific Oeco. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-01-555-0485 |
| Primary Part Number | 1903-28 |
| Item Name | Arrester,electrical Surge |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | Oeco, Llc Dba Pacific Scientific Oeco |
| Status | ACTIVE |
| Terminal Quantity | 1 |
| Usage Design | OUTDOOR |
| Terminal Type | THREADED STUD |
| Overall Diameter | 0.275 INCHES NOMINAL IN |
| Mounting Method | HOLE |
| Arrester Type | RESISTOR |
| Mounting Configuration | SIX 0.177 IN. DIA. MTG. HOLES EQUALLY SPACED ON 2.385 DIA. IN |
| 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 |
|---|---|
| 1903-28 PRIMARY | Oeco, Llc Dba Pacific Scientific Oeco (USA) |
| Reference | Meaning |
|---|---|
| 1903-28 | 5/9 Secondary reference Richey Electronics Inc |
NSN 5920-01-555-0485 is a Arrester,electrical Surge, manufactured by Oeco, Llc Dba Pacific Scientific Oeco, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-01-555-0485 has 1 manufacturer part number on file: 1903-28 (Oeco, Llc Dba Pacific Scientific Oeco).
Key specifications for 1903-28: Terminal Quantity: 1; Usage Design: OUTDOOR; Terminal Type: THREADED STUD; Overall Diameter: 0.275 INCHES NOMINAL IN. 7 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.