The Resistor,variable,nonwire Wound,, cataloged under National Stock Number 5905-00-267-8993, 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 22 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-00-267-8993 |
| Primary Part Number | RS503U |
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Rockwell Automation, Inc. Dba Rockwell Automation |
| Status | ACTIVE |
| Electrical Resistance Per Section | 50.000 KILOHMS SINGLE SECTION |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 125.0 SINGLE SECTION |
| Section Quantity | 1 |
| Mounting Facility Quantity | 2 |
| Shaft Diameter | 0.125 INCHES NOMINAL IN |
| Body Style | RECTANGULAR W/MOUNTING HOLES/SLOTS |
| Mounting Method | UNTHREADED HOLE(S) |
| Body Width | 0.250 INCHES NOMINAL IN |
| Body Height | 0.359 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.093 INCHES NOMINAL IN |
| Terminal Location | LOWER ADJACENT SIDE TWO ROWS |
| Shaft Style | ROUND, SLOTTED |
| Actuator Type | SINGLE SHAFT |
| Lateral Distance Between Mounting Hole Centers | 1.000 INCHES NOMINAL IN |
| Shaft Length | 0.062 INCHES NOMINAL IN |
| Body Length | 1.250 INCHES NOMINAL IN |
| Power Dissipation Rating Per Section in Watts | 0.25 FREE AIR SINGLE SECTION |
| Reliability Indicator | NOT ESTABLISHED |
| Resistance Temp Characteristic Range Per Section in Percent | +0.0 TO 7.0 -55 DEG CELSIUS SINGLE SECTION AND +0.0 TO 3.5 -25 DEG CELSIUS SINGLE SECTION AND +0.0 TO 2.0 0 DEG CELSIUS SINGLE SECTION AND -2.5 TO 2.5 85 DEG CELSIUS SINGLE SECTION AND +0.0 TO 5.5 125 DEG CELSIUS SINGLE SECTION |
| 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 |
|---|---|
| RS503U PRIMARY | Rockwell Automation, Inc. Dba Rockwell Automation (USA) |
| Reference | Meaning |
|---|---|
| BA99448K503 | 5/9 Secondary reference American Telephone and Telegraph Co |
| BA99448K503 | 5/9 Secondary reference Stampr Inc |
NSN 5905-00-267-8993 is a Resistor,variable,nonwire Wound,, manufactured by Rockwell Automation, Inc. Dba Rockwell Automation, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-267-8993 has 1 manufacturer part number on file: RS503U (Rockwell Automation, Inc. Dba Rockwell Automation).
Key specifications for RS503U: Overall Height: 0.515 INCHES NOMINAL IN; Electrical Resistance Per Section: 50.000 KILOHMS SINGLE SECTION; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 125.0 SINGLE SECTION; Section Quantity: 1. 22 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.