The Resistor,variable,wire Wound,pre, cataloged under National Stock Number 5905-00-421-9138, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-00-421-9138 |
| Item Name | Resistor,variable,wire Wound,pre |
| FSC / FSG | 5905 / 59 — Resistor |
| Status | ACTIVE |
| Maximum Running Torque | 1.00 INCH-OUNCES IN |
| Body Diameter | 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN |
| Lateral Runout | 0.005 INCHES IN |
| Electrical Resistance Per Section | 600.0 OHMS ALL SECTIONS |
| Mounting Lip Depth | 0.0620 INCHES NOMINAL IN |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 105.0 ALL SECTIONS |
| Undercut Width | 0.0570 INCHES MINIMUM IN |
| Section Quantity | 2 |
| Shaft Diameter | 0.1245 INCHES MINIMUM AND 0.1248 INCHES MAXIMUM IN |
| Undercut Diameter | 0.781 INCHES MAXIMUM IN |
| Function Characteristic Per Section | ALL SECTIONS LINEAR |
| Body Style | CYLINDRICAL SERVO MOUNTED |
| Function Conformity Tolerance Per Section | -1.00 TO 1.00 ALL SECTIONS |
| Precious Material | GOLD |
| Mounting Method | CLAMP RING(S) |
| Maximum Starting Torque | 1.00 INCH-OUNCES IN |
| Terminal Location | RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED |
| Mounting Lip Diameter | 0.8600 INCHES MINIMUM AND 0.8900 INCHES MAXIMUM IN |
| Shaft Style | ROUND |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 0.150 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN |
| Pilot Diameter | 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN |
| Body Length | 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN |
| Shaft Runout | 0.001 INCHES IN |
| Pilot Length | 0.0620 INCHES NOMINAL IN |
| Power Dissipation Rating Per Section in Watts | 1.0 FREE AIR ALL SECTIONS |
| Effective Electrical Rotation in Deg Angular Rotation | 310.0 NOMINAL |
| Reliability Indicator | NOT ESTABLISHED |
| Shaft Radial Play | 0.002 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 3110737 | 5/9 Secondary reference Mechtronics of Arizona Corp Chatsworth Opns |
| 3110737 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5905-00-421-9138 is a Resistor,variable,wire Wound,pre, classified under FSC 5905, Resistor. Status: active.
Key specifications for 5905-00-421-9138: Maximum Running Torque: 1.00 INCH-OUNCES IN; Body Diameter: 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN; Lateral Runout: 0.005 INCHES IN; Electrical Resistance Per Section: 600.0 OHMS ALL SECTIONS. 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.