The Resistor,variable,wire Wound,pre, cataloged under National Stock Number 5905-01-409-2891, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Bourns, Inc. Dba Bourns Sensor Controls. Government technical data includes 30 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-01-409-2891 |
| Primary Part Number | 3540S-1-403 |
| Item Name | Resistor,variable,wire Wound,pre |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Bourns, Inc. Dba Bourns Sensor Controls |
| Status | ACTIVE |
| Body Diameter | 21.85 MILLIMETERS MINIMUM AND 22.61 MILLIMETERS MAXIMUM MM |
| Screw Thread Quantity Per Inch | 32.0 |
| Lateral Runout | 0.13 MILLIMETERS MM |
| Electrical Resistance Per Section | 40000.0 OHMS SINGLE SECTION |
| Section Quantity | 1 |
| Shaft Diameter | 6.334 MILLIMETERS MINIMUM AND 6.342 MILLIMETERS MAXIMUM MM |
| Function Characteristic Per Section | SINGLE SECTION LINEAR |
| Body Style | CYLINDRICAL BUSHING MOUNTED |
| Function Conformity Tolerance Per Section | -0.25 TO 0.25 SINGLE SECTION |
| Shaft End Play | 0.3 MILLIMETERS MM |
| Precious Material | GOLD |
| Mounting Method | STANDARD BUSHING |
| Temp Coefficient of Resistance Per Section in Ppm Per Deg Celsius | -50.0 TO 50.0 SINGLE SECTION |
| Terminal Location | RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED |
| Shaft Style | ROUND, SLOTTED |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 12.7 MILLIMETERS NOMINAL MM |
| Body Length | 18.68 MILLIMETERS MINIMUM AND 19.44 MILLIMETERS MAXIMUM MM |
| Shaft Runout | 0.08 MILLIMETERS MM |
| Power Dissipation Rating Per Section in Watts | 2.0 FREE AIR SINGLE SECTION |
| Effective Electrical Rotation in Deg Angular Rotation | 3600.0 NOMINAL |
| Pilot Diameter Runout | 0.08 MILLIMETERS MM |
| Screw Thread Diameter | 0.375 INCHES NOMINAL IN |
| Bearing Type | BEARING SHAFT |
| Reliability Indicator | ESTABLISHED |
| Screw Thread Series Designator | UNEF |
| Shaft Radial Play | 0.08 MILLIMETERS MM |
| Mechanical Backlash in Deg Angular Rotation | 1.0 |
| Precious Material and Location | TERMINALS GOLD |
| Resistance Tolerance Per Section in Percent | -5.0 TO 5.0 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 |
|---|---|
| 3540S-1-403 PRIMARY | Bourns, Inc. Dba Bourns Sensor Controls (USA) |
| Reference | Meaning |
|---|---|
| 3540S1-403 | 5/9 Secondary reference Bourns Inc |
NSN 5905-01-409-2891 is a Resistor,variable,wire Wound,pre, manufactured by Bourns, Inc. Dba Bourns Sensor Controls, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-409-2891 has 1 manufacturer part number on file: 3540S-1-403 (Bourns, Inc. Dba Bourns Sensor Controls).
Key specifications for 3540S-1-403: Body Diameter: 21.85 MILLIMETERS MINIMUM AND 22.61 MILLIMETERS MAXIMUM MM; Screw Thread Quantity Per Inch: 32.0; Lateral Runout: 0.13 MILLIMETERS MM; Electrical Resistance Per Section: 40000.0 OHMS 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.