The Resistor,variable,wire Wound,pre, cataloged under National Stock Number 5905-01-293-3959, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Bi Technologies Corporation Div Bi Technologies Corp.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5905-01-293-3959 |
| Primary Part Number | SD-604A |
| Item Name | Resistor,variable,wire Wound,pre |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Bi Technologies Corporation Div Bi Technologies Corp. |
| Status | ACTIVE |
| Maximum Running Torque | 2.50 INCH-OUNCES IN |
| Body Diameter | 3.296 INCHES MINIMUM AND 3.328 INCHES MAXIMUM IN |
| Lateral Runout | 0.004 INCHES IN |
| Electrical Resistance Per Section | 5.0 KILOHMS SINGLE SECTION |
| Mounting Lip Depth | 0.0620 INCHES NOMINAL IN |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 85.0 SINGLE SECTION |
| Undercut Width | 0.0930 INCHES NOMINAL IN |
| Section Quantity | 1 |
| Shaft Diameter | 0.2497 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Undercut Diameter | 3.312 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGED |
| Function Characteristic Per Section | SINGLE SECTION LINEAR |
| Body Style | CYLINDRICAL SERVO MOUNTED |
| Function Conformity Tolerance Per Section | -0.05 TO 0.05 SINGLE SECTION |
| Shaft End Play | 0.007 INCHES IN |
| Mounting Method | TERMINAL |
| Maximum Starting Torque | 3.50 INCH-OUNCES IN |
| Terminal Location | RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED |
| Mounting Lip Diameter | 3.5000 INCHES NOMINAL IN |
| Features Provided | HUMIDITY PROOF |
| Shaft Style | ROUND |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 1.469 INCHES MINIMUM AND 1.531 INCHES MAXIMUM IN |
| Pilot Diameter | 3.2490 INCHES NOMINAL IN |
| Body Length | 4.094 INCHES MINIMUM AND 4.188 INCHES MAXIMUM IN |
| Maximum Stop Torque | 730.00 INCH-OUNCES IN |
| Shaft Runout | 0.002 INCHES IN |
| Pilot Length | 0.0620 INCHES NOMINAL IN |
| Power Dissipation Rating Per Section in Watts | 15.0 FREE AIR SINGLE SECTION |
| Effective Electrical Rotation in Deg Angular Rotation | 9000.0 MINIMUM AND 9004.0 MAXIMUM |
| 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 |
|---|---|
| SD-604A PRIMARY | Bi Technologies Corporation Div Bi Technologies Corp. (USA) |
| Reference | Meaning |
|---|---|
| DSPR5KL0.05 | 5/9 Secondary reference Bi Technologies Corporation Div Bi Technologies Corp. |
NSN 5905-01-293-3959 is a Resistor,variable,wire Wound,pre, manufactured by Bi Technologies Corporation Div Bi Technologies Corp., classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-293-3959 has 1 manufacturer part number on file: SD-604A (Bi Technologies Corporation Div Bi Technologies Corp.).
Key specifications for SD-604A: Maximum Running Torque: 2.50 INCH-OUNCES IN; Body Diameter: 3.296 INCHES MINIMUM AND 3.328 INCHES MAXIMUM IN; Lateral Runout: 0.004 INCHES IN; 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.