The Resistor,thermal, cataloged under National Stock Number 5905-00-321-8431, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Rtie Holdings Llc. Government technical data includes 26 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5905-00-321-8431 |
| Primary Part Number | 509413-3 |
| Item Name | Resistor,thermal |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Rtie Holdings Llc |
| Status | ACTIVE |
| Temp Points for Resistance Readings at Zero Power | 150.0 CELSIUS THIRD RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 50.0 CELSIUS SECOND RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | -50.0 CELSIUS FIRST RESISTANCE-TEMPERATURE POINT DEGC |
| Temp Points for Resistance Readings at Zero Power | 300.0 CELSIUS FOURTH RESISTANCE-TEMPERATURE POINT DEGC |
| Inclosure Type | ENCAPSULATED |
| Terminal Diameter | 0.020 INCHES NOMINAL IN |
| Resistance Tolerance at a Specified Temp in Percent | -15.0 TO 15.0 ALL RESISTANCE-TEMPERATURE POINTS |
| Terminal Length | 1.000 INCHES MINIMUM IN |
| Zero Power Resistance at Specified Temp | 0.3 OHMS FOURTH RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 2.8 OHMS THIRD RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 3.8 KILOHMS FIRST RESISTANCE-TEMPERATURE POINT |
| Zero Power Resistance at Specified Temp | 4.3 OHMS SECOND RESISTANCE-TEMPERATURE POINT |
| Body Outside Diameter | 0.425 INCHES MAXIMUM IN |
| Body Width | 0.120 INCHES MAXIMUM IN |
| Style Designator | DISK |
| Power Dissipation Constant in Milliwatts Per Deg Celsius | 4.0 |
| Zero Power Resistance | 75.000 OHMS |
| Thermal Time Constant in Seconds | 45.0 |
| Ambient Temp at Full Rated Power | 25.0 CELSIUS DEGC |
| Zero Power Resistance Tolerance in Percent at Reference Temp | -5.0 TO 5.0 |
| Maximum Operating Temp | 125.0 CELSIUS DEGC |
| Zero Power Temp Coefficient of Resistance in Percent Per Deg Celsius | -3.90 |
| Reliability Indicator | NOT ESTABLISHED |
| Test Data Document | 31550-509413 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Terminal Type and Quantity | 2 WIRE LEAD |
| Maximum Power Dissipation Rating | 400.00 MILLIWATTS |
| 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 |
|---|---|
| 509413-3 PRIMARY | Rtie Holdings Llc (USA) |
| Reference | Meaning |
|---|---|
| 509413-3 | 5/9 Secondary reference L3harris Technologies, Inc. Dba Harris Corporation |
| 2DB750S | C/1 Advisory reference — outside the item-of-supply concept Sensitron Inc |
NSN 5905-00-321-8431 is a Resistor,thermal, manufactured by Rtie Holdings Llc, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-321-8431 has 1 manufacturer part number on file: 509413-3 (Rtie Holdings Llc).
Key specifications for 509413-3: Temp Points for Resistance Readings at Zero Power: 150.0 CELSIUS THIRD RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: 50.0 CELSIUS SECOND RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: -50.0 CELSIUS FIRST RESISTANCE-TEMPERATURE POINT DEGC; Temp Points for Resistance Readings at Zero Power: 300.0 CELSIUS FOURTH RESISTANCE-TEMPERATURE POINT DEGC. 26 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.