The Resistor,fixed,wire Wound, cataloged under National Stock Number 5905-01-536-8512, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Leonardo S.p.a. - Electronics Division - Defence Business Area. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-01-536-8512 |
| Primary Part Number | 820FI0280 |
| Item Name | Resistor,fixed,wire Wound |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Leonardo S.p.a. - Electronics Division - Defence Business Area |
| Status | ACTIVE |
| Resistance Tolerance in Percent | -3.000 TO 3.000 |
| Temp Coefficient of Resistance in Ppm Per Deg Celsius | -100.0 TO 100.0 |
| Electrical Resistance | 0.400 OHMS |
| Inclosure Type | ENCAPSULATED |
| Mounting Hole Size | 0.250 INCHES NOMINAL IN |
| Terminal Type | THREADED STUD |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 3.875 INCHES NOMINAL IN |
| Terminal Length | 1.250 INCHES NOMINAL IN |
| Body Width | 2.125 INCHES NOMINAL IN |
| Body Height | 3.000 INCHES NOMINAL IN |
| Reactance Characteristic | INDUCTIVE |
| Style Designator | AXIAL TERMINAL (S) |
| Power Dissipation Rating in Watts | 250.000 FREE AIR |
| Ambient Temp at Full Rated Power | -55.0 CELSIUS DEGC |
| Body Length | 4.499 INCHES NOMINAL IN |
| Ambient Temp in Deg Celsius at Zero Percent Rated Power | 125.0 |
| Reliability Indicator | NOT ESTABLISHED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 820FI0280 | Leonardo S.p.a. - Electronics Division - Defence Business Area (ITA) |
| Reference | Meaning |
|---|---|
| RH-250 0R4 PORM 3 PCT | 3/2 Design control — primary reference U.S. Government activity |
| RH250-3PCT-H0.4 | 5/9 Secondary reference U.S. Government activity |
NSN 5905-01-536-8512 is a Resistor,fixed,wire Wound, manufactured by Leonardo S.p.a. - Electronics Division - Defence Business Area, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-536-8512 has 1 manufacturer part number on file: 820FI0280 (Leonardo S.p.a. - Electronics Division - Defence Business Area).
Key specifications for 820FI0280: Resistance Tolerance in Percent: -3.000 TO 3.000; Temp Coefficient of Resistance in Ppm Per Deg Celsius: -100.0 TO 100.0; Electrical Resistance: 0.400 OHMS; Inclosure Type: ENCAPSULATED. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.