The Resistor,fixed,wire Wound, cataloged under National Stock Number 5905-00-644-9813, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Shallcross Inc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5905-00-644-9813 |
| Primary Part Number | BX180AK555-50HMSP0RM0-1 |
| Item Name | Resistor,fixed,wire Wound |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Shallcross Inc |
| Status | ACTIVE |
| Resistance Tolerance in Percent | -0.100 TO 0.100 |
| Temp Coefficient of Resistance in Ppm Per Deg Celsius | -20.0 TO 20.0 |
| Body Diameter | 0.500 INCHES NOMINAL IN |
| Electrical Resistance | 555.500 OHMS |
| Inclosure Type | ENCAPSULATED |
| Terminal Type | WIRE LEAD |
| Temp Range of Temp Coefficient in Deg Celsius | -55.0 TO 125.0 |
| Style Designator | RADIAL TERMINAL EACH END |
| Power Dissipation Rating in Watts | 0.500 FREE AIR |
| Ambient Temp at Full Rated Power | 105.0 CELSIUS DEGC |
| Body Length | 0.625 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 |
|---|---|
| BX180AK555-50HMSP0RM0-1 PRIMARY | Shallcross Inc (USA) |
| BX180AK555-50HMP0RM1PCT PRIMARY | Shallcross Inc (USA) |
| Reference | Meaning |
|---|---|
| BX180AK | 3/1 Design control — primary reference Shallcross Inc |
NSN 5905-00-644-9813 is a Resistor,fixed,wire Wound, manufactured by Shallcross Inc, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-644-9813 has 2 manufacturer part numbers on file: BX180AK555-50HMSP0RM0-1 (Shallcross Inc), BX180AK555-50HMP0RM1PCT (Shallcross Inc).
Key specifications for BX180AK555-50HMSP0RM0-1: Resistance Tolerance in Percent: -0.100 TO 0.100; Temp Coefficient of Resistance in Ppm Per Deg Celsius: -20.0 TO 20.0; Body Diameter: 0.500 INCHES NOMINAL IN; Electrical Resistance: 555.500 OHMS. 13 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.