The Resistor,variable,wire Wound,pre, cataloged under National Stock Number 5905-01-169-2598, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-01-169-2598 |
| Primary Part Number | 70902-21906-102 |
| Item Name | Resistor,variable,wire Wound,pre |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Maximum Running Torque | 0.75 INCH-OUNCES IN |
| Body Diameter | 0.875 INCHES NOMINAL IN |
| Electrical Resistance Per Section | 2.5 KILOHMS SINGLE SECTION |
| Mounting Lip Depth | 0.0620 INCHES NOMINAL IN |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 125.0 SINGLE SECTION |
| Undercut Width | 0.0620 INCHES NOMINAL IN |
| Section Quantity | 1 |
| Shaft Diameter | 0.125 INCHES MAXIMUM IN |
| Undercut Diameter | 0.750 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGED |
| Function Characteristic Per Section | SINGLE SECTION LINEAR |
| Body Style | CYLINDRICAL SERVO MOUNTED |
| Function Conformity Tolerance Per Section | -1.00 TO 1.00 SINGLE SECTION |
| Overall Diameter | 0.875 INCHES NOMINAL IN |
| 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 | 0.8750 INCHES NOMINAL IN |
| Features Provided | HUMIDITY PROOF |
| Shaft Style | ROUND |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 0.330 INCHES NOMINAL IN |
| Pilot Diameter | 0.7500 INCHES NOMINAL IN |
| Body Length | 0.750 INCHES MAXIMUM IN |
| Maximum Stop Torque | 32.00 INCH-OUNCES IN |
| Pilot Length | 0.0620 INCHES MAXIMUM IN |
| Power Dissipation Rating Per Section in Watts | 1.0 FREE AIR SINGLE SECTION |
| Effective Electrical Rotation in Deg Angular Rotation | 321.0 NOMINAL |
| Bearing Type | BEARING SHAFT |
| 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 |
|---|---|
| 70902-21906-102 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 14W1-3426 | Servo Instrument Corporation (USA) |
| Reference | Meaning |
|---|---|
| WP7/8-226 | 5/9 Secondary reference Data Instruments Inc |
| WP7/8M-136 | 5/9 Secondary reference U.S. Government activity |
| WP7/8M-226 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| WP7/8M-136 | 5/9 Secondary reference Data Instruments Inc |
NSN 5905-01-169-2598 is a Resistor,variable,wire Wound,pre, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-169-2598 has 2 manufacturer part numbers on file: 70902-21906-102 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 14W1-3426 (Servo Instrument Corporation).
Key specifications for 70902-21906-102: Maximum Running Torque: 0.75 INCH-OUNCES IN; Body Diameter: 0.875 INCHES NOMINAL IN; Electrical Resistance Per Section: 2.5 KILOHMS SINGLE SECTION; Mounting Lip Depth: 0.0620 INCHES NOMINAL IN. 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.