The Resistor,variable,nonwire Wound,, cataloged under National Stock Number 5905-00-768-5653, 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 24 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-00-768-5653 |
| Primary Part Number | RS251U |
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Clarostat Sensors and Controls |
| Status | ACTIVE |
| Electrical Resistance Per Section | 250.0 OHMS SINGLE SECTION |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 120.0 SINGLE SECTION |
| Section Quantity | 1 |
| Mounting Facility Quantity | 2 |
| Shaft Diameter | 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN |
| Fragility Factor | MODERATELY DELICATE |
| Body Style | RECTANGULAR W/MOUNTING HOLES/SLOTS |
| Mounting Method | UNTHREADED HOLE(S) |
| Body Width | 0.235 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN |
| Body Height | 0.312 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN |
| Mounting Hole Diameter | 0.078 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN |
| Terminal Location | LOWER ADJACENT SIDE SINGLE ROW |
| Center to Center Distance Between Center Terminal and Outside Terminal | 0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Shaft Style | ROUND, SLOTTED |
| Actuator Type | SINGLE SHAFT |
| Lateral Distance Between Mounting Hole Centers | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN |
| Shaft Length | 0.046 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN |
| Body Length | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Center to Center Distance Between Terminals | 0.500 INCHES NOMINAL IN |
| Power Dissipation Rating Per Section in Watts | 0.25 FREE AIR SINGLE SECTION |
| Reliability Indicator | NOT ESTABLISHED |
| Resistance Tolerance Per Section in Percent | -10.0 TO 10.0 SINGLE SECTION |
| Terminal Type and Quantity | 3 TAB, SOLDER LUG |
| Ambient Temp in Deg Celsius Per Section at Full Rated Power | 70.0 SINGLE SECTION |
| 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 |
|---|---|
| RS251U PRIMARY | Clarostat Sensors and Controls (USA) |
| Reference | Meaning |
|---|---|
| RS251U | 5/9 Secondary reference Rockwell Automation, Inc. Dba Rockwell Automation |
| BA99448K251 | 5/9 Secondary reference Stampr Inc |
| BA99448K251 | 5/9 Secondary reference American Telephone and Telegraph Co |
NSN 5905-00-768-5653 is a Resistor,variable,nonwire Wound,, manufactured by Clarostat Sensors and Controls, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-768-5653 has 1 manufacturer part number on file: RS251U (Clarostat Sensors and Controls).
Key specifications for RS251U: Overall Height: 0.516 INCHES NOMINAL IN; Electrical Resistance Per Section: 250.0 OHMS SINGLE SECTION; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 120.0 SINGLE SECTION; Section Quantity: 1. 24 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.