The Resistor,fixed,wire Wound,induct, cataloged under National Stock Number 5905-00-421-0718, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Trw Inc Trw Intl Trade Government Sales Dept. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-00-421-0718 |
| Primary Part Number | SPH-51R0-5PCT |
| Item Name | Resistor,fixed,wire Wound,induct |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Trw Inc Trw Intl Trade Government Sales Dept |
| Status | ACTIVE |
| Resistance Tolerance in Percent | -5.000 TO 5.000 |
| Temp Coefficient of Resistance in Ppm Per Deg Celsius | -400.0 TO 400.0 |
| Body Diameter | 0.225 INCHES NOMINAL IN |
| Electrical Resistance | 51.000 OHMS |
| Inclosure Type | ENCAPSULATED |
| Terminal Type | WIRE LEAD |
| Terminal Length | 1.500 INCHES NOMINAL IN |
| Temp Range of Temp Coefficient in Deg Celsius | -55.0 TO 160.0 |
| Style Designator | AXIAL TERMINAL EACH END |
| Power Dissipation Rating in Watts | 2.000 FREE AIR |
| Ambient Temp at Full Rated Power | 70.0 CELSIUS DEGC |
| Body Length | 0.562 INCHES NOMINAL IN |
| Ambient Temp in Deg Celsius at Zero Percent Rated Power | 160.0 |
| Reliability Indicator | NOT ESTABLISHED |
| Cubic Measure | 0.022 CUBIC INCHES |
| 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 |
|---|---|
| SPH-51R0-5PCT | Trw Inc Trw Intl Trade Government Sales Dept (USA) |
| Reference | Meaning |
|---|---|
| KS19253L1-51OHM | 3/9 Design control — primary reference American Telephone and Telegraph Co |
| KS19253L1-51OHM | 5/9 Secondary reference Lucent Technologies Inc Dba Federal Marketing Group |
| BWH-51R0J | 5/9 Secondary reference Trw Inc Trw Electronic Components Irc Fixed Resistors Philadelphia Div |
| KS19253L1-51OHM | C/1 Advisory reference — outside the item-of-supply concept Lucent Technologies Inc Corporate Headquarters |
NSN 5905-00-421-0718 is a Resistor,fixed,wire Wound,induct, manufactured by Trw Inc Trw Intl Trade Government Sales Dept, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-421-0718 has 1 manufacturer part number on file: SPH-51R0-5PCT (Trw Inc Trw Intl Trade Government Sales Dept).
Key specifications for SPH-51R0-5PCT: Resistance Tolerance in Percent: -5.000 TO 5.000; Temp Coefficient of Resistance in Ppm Per Deg Celsius: -400.0 TO 400.0; Body Diameter: 0.225 INCHES NOMINAL IN; Electrical Resistance: 51.000 OHMS. 15 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.