The Resistor,variable,nonwire Wound,, cataloged under National Stock Number 5905-00-899-8779, 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5905-00-899-8779 |
| Primary Part Number | JA1L048S254UC |
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Rockwell Automation, Inc. Dba Rockwell Automation |
| Status | ACTIVE |
| Body Diameter | 1.156 INCHES MAXIMUM IN |
| Screw Thread Quantity Per Inch | 32.0 |
| Electrical Resistance Per Section | 250.0 KILOHMS SINGLE SECTION |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 120.0 SINGLE SECTION |
| Section Quantity | 1 |
| Shaft Diameter | 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Nonturn Device Radius | 0.526 INCHES MINIMUM AND 0.536 INCHES MAXIMUM IN |
| Body Style | CYLINDRICAL BUSHING MOUNTED |
| Overall Diameter | 1.453 INCHES NOMINAL IN |
| Terminal Length | 0.297 INCHES NOMINAL IN |
| Mounting Method | LOCKING BUSHING |
| Maximum Starting Torque | 6.00 INCH-OUNCES IN |
| Terminal Location | RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE |
| Shaft Style | ROUND, SLOTTED |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 0.745 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Body Length | 0.625 INCHES MAXIMUM IN |
| Maximum Stop Torque | 192.00 INCH-OUNCES IN |
| Power Dissipation Rating Per Section in Watts | 2.25 FREE AIR SINGLE SECTION |
| Effective Electrical Rotation in Deg Angular Rotation | 309.0 MINIMUM AND 315.0 MAXIMUM |
| Screw Thread Diameter | 0.375 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Screw Thread Series Designator | UNEF |
| Actuator Travel Control Feature | STOPS |
| 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 | 309.0 MINIMUM AND 315.0 MAXIMUM |
| Mounting Bushing Length | 0.500 INCHES NOMINAL IN |
| Device Design Type | NONTURN AT 9:00 OCLOCKUNABLE TO DECODE |
| 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 |
|---|---|
| JA1L048S254UC PRIMARY | Rockwell Automation, Inc. Dba Rockwell Automation (USA) |
| 2100-0029 | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 2100-0029 | 5/9 Secondary reference Keysight Technologies, Inc. |
| 2100-0029 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 380-2503K 1/2 IN. SHAFT | 5/9 Secondary reference Clarostat Sensors and Controls |
NSN 5905-00-899-8779 is a Resistor,variable,nonwire Wound,, manufactured by Rockwell Automation, Inc. Dba Rockwell Automation, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-899-8779 has 2 manufacturer part numbers on file: JA1L048S254UC (Rockwell Automation, Inc. Dba Rockwell Automation), 2100-0029 (Keysight Technologies Inc).
Key specifications for JA1L048S254UC: Body Diameter: 1.156 INCHES MAXIMUM IN; Screw Thread Quantity Per Inch: 32.0; Electrical Resistance Per Section: 250.0 KILOHMS SINGLE SECTION; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 120.0 SINGLE SECTION. 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.