The Resistor,variable,nonwire Wound,, cataloged under National Stock Number 5905-01-087-3173, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Clarostat Sensors and Controls. Government technical data includes 29 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-01-087-3173 |
| Primary Part Number | WRS2T040S503U |
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Clarostat Sensors and Controls |
| Status | ACTIVE |
| Maximum Running Torque | 0.50 INCH-OUNCES IN |
| Body Diameter | 0.500 INCHES NOMINAL IN |
| Operating Position | START OF ROTATION |
| Screw Thread Quantity Per Inch | 32.0 |
| Electrical Resistance Per Section | 50.000 KILOHMS SINGLE SECTION |
| Switch Voltage Rating in Volts | 125.0 |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 120.0 SINGLE SECTION |
| Section Quantity | 1 |
| Shaft Diameter | 0.125 INCHES NOMINAL IN |
| Shaft Bearing Type | BEARING |
| Nonturn Device Radius | 0.245 INCHES NOMINAL IN |
| Fragility Factor | RUGGED |
| Body Style | CYLINDRICAL BUSHING MOUNTED |
| Overall Diameter | 0.750 INCHES MAXIMUM IN |
| Mounting Method | STANDARD BUSHING |
| Maximum Starting Torque | 3.00 INCH-OUNCES IN |
| Terminal Location | REAR-BOTTOM |
| Features Provided | SWITCH AND SHAFT SEAL |
| Shaft Style | ROUND, SLOTTED |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 0.625 INCHES NOMINAL IN |
| Body Length | 0.948 INCHES MAXIMUM IN |
| Maximum Stop Torque | 32.00 INCH-OUNCES IN |
| Power Dissipation Rating Per Section in Watts | 0.5 FREE AIR SINGLE SECTION |
| Switch Type | ROTARY |
| Effective Electrical Rotation in Deg Angular Rotation | 248.0 NOMINAL |
| Screw Thread Diameter | 0.250 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Screw Thread Series Designator | UNEF |
| 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 |
|---|---|
| WRS2T040S503U PRIMARY | Clarostat Sensors and Controls (USA) |
| WRS1G040S503U PRIMARY | Clarostat Sensors and Controls (USA) |
| Reference | Meaning |
|---|---|
| WRS2T040S503U | 5/9 Secondary reference Rockwell Automation, Inc. Dba Rockwell Automation |
| WRS1G040S503U | 5/9 Secondary reference Rockwell Automation, Inc. Dba Rockwell Automation |
| WRS2A040S503U | 5/9 Secondary reference Rockwell Automation, Inc. Dba Rockwell Automation |
NSN 5905-01-087-3173 is a Resistor,variable,nonwire Wound,, manufactured by Clarostat Sensors and Controls, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-087-3173 has 2 manufacturer part numbers on file: WRS2T040S503U (Clarostat Sensors and Controls), WRS1G040S503U (Clarostat Sensors and Controls).
Key specifications for WRS2T040S503U: Maximum Running Torque: 0.50 INCH-OUNCES IN; Body Diameter: 0.500 INCHES NOMINAL IN; Operating Position: START OF ROTATION; Screw Thread Quantity Per Inch: 32.0. 29 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.