The Resistor,variable,nonwire Wound,, cataloged under National Stock Number 5905-00-071-9980, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Rockwell Automation, Inc. Dba Rockwell Automation. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-00-071-9980 |
| Primary Part Number | RK251U |
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Rockwell Automation, Inc. Dba Rockwell Automation |
| Status | ACTIVE |
| Screw Thread Quantity Per Inch | 32.0 |
| Electrical Resistance Per Section | 250.000 OHMS SINGLE SECTION |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 125.0 SINGLE SECTION |
| Section Quantity | 1 |
| Body Style | RECTANGULAR BUSHING MOUNTED |
| Terminal Length | 0.171 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN |
| Mounting Method | STANDARD BUSHING |
| Body Width | 0.281 INCHES NOMINAL IN |
| Body Height | 0.334 INCHES NOMINAL IN |
| Maximum Starting Torque | 8.00 INCH-OUNCES IN |
| Terminal Location | LOWER ADJACENT SIDE SINGLE ROW |
| Actuator Type | FLUSH DRIVE WITH SLOT-HOLE |
| Body Length | 1.312 INCHES NOMINAL IN |
| Power Dissipation Rating Per Section in Watts | 0.25 FREE AIR SINGLE SECTION |
| Effective Electrical Rotation in Deg Angular Rotation | 9000.0 NOMINAL |
| Screw Thread Diameter | 0.216 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNEF |
| Actuator Travel Control Feature | CONTINUOUS MOTION |
| Test Data Document | 01121-202A STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.). A |
| Resistance Tolerance Per Section in Percent | -10.0 TO 10.0 SINGLE SECTION |
| Terminal Type and Quantity | 3 TAB, SOLDER LUG |
| Rotary Actuator Travel in Angular Deg | 360.0 NOMINAL |
| Mounting Bushing Length | 0.250 INCHES NOMINAL IN |
| 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 |
|---|---|
| RK251U PRIMARY | Rockwell Automation, Inc. Dba Rockwell Automation (USA) |
NSN 5905-00-071-9980 is a Resistor,variable,nonwire Wound,, manufactured by Rockwell Automation, Inc. Dba Rockwell Automation, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-071-9980 has 1 manufacturer part number on file: RK251U (Rockwell Automation, Inc. Dba Rockwell Automation).
Key specifications for RK251U: Overall Height: 0.578 INCHES NOMINAL IN; Screw Thread Quantity Per Inch: 32.0; Electrical Resistance Per Section: 250.000 OHMS SINGLE SECTION; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 125.0 SINGLE SECTION. 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.