The Resistor,variable,wire Wound,pre, cataloged under National Stock Number 5905-01-259-3520, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc. Government technical data includes 30 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-01-259-3520 |
| Primary Part Number | 41-2121-2 |
| Item Name | Resistor,variable,wire Wound,pre |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc |
| Status | ACTIVE |
| Maximum Running Torque | 3.00 INCH-OUNCES IN |
| Body Diameter | 2.000 INCHES NOMINAL IN |
| Screw Thread Quantity Per Inch | 32.0 |
| Electrical Resistance Per Section | 5.0 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 | 3 |
| Shaft Diameter | 0.250 INCHES MAXIMUM IN |
| Fragility Factor | MODERATELY DELICATE |
| Function Characteristic Per Section | SINGLE SECTION LINEAR |
| Body Style | CYLINDRICAL HOLE/SLOT MOUNTED |
| Function Conformity Tolerance Per Section | -0.50 TO 0.50 SINGLE SECTION |
| Mounting Hole/stud Circle Diameter | 1.750 INCHES NOMINAL IN |
| Mounting Method | THREADED HOLE(S) |
| Maximum Starting Torque | 5.00 INCH-OUNCES IN |
| Fixed Tap Quantity Per Section | 1 SINGLE SECTION |
| Temp Coefficient of Resistance Per Section in Ppm Per Deg Celsius | -20.0 TO 20.0 SINGLE SECTION |
| Terminal Location | RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED |
| Shaft Style | ROUND |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 0.440 INCHES NOMINAL IN |
| Body Length | 1.000 INCHES NOMINAL IN |
| Tap Location Tolerance Per Section | -2.0 TO 2.0 DEG ANGULAR ROTATION SINGLE SECTION |
| Power Dissipation Rating Per Section in Watts | 4.0 FREE AIR SINGLE SECTION |
| Effective Electrical Rotation in Deg Angular Rotation | 320.0 NOMINAL |
| Screw Thread Diameter | 0.138 INCHES NOMINAL IN |
| Bearing Type | SLEEVE SHAFT |
| Reliability Indicator | NOT ESTABLISHED |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Cubic Measure | 2.262 CUBIC INCHES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5905-01-259-3520 is a Resistor,variable,wire Wound,pre, manufactured by Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-259-3520 has 2 manufacturer part numbers on file: 41-2121-2 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), V100117 (Voltronics Inc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-425-5297. Verify interchangeability with system specifications before substitution.
Key specifications for 41-2121-2: Maximum Running Torque: 3.00 INCH-OUNCES IN; Body Diameter: 2.000 INCHES NOMINAL IN; Screw Thread Quantity Per Inch: 32.0; Electrical Resistance Per Section: 5.0 KILOHMS SINGLE SECTION. 30 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.