The Resistor,variable,wire Wound,non, cataloged under National Stock Number 5905-01-050-8399, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5905-01-050-8399 |
| Primary Part Number | 1801678-1 |
| Item Name | Resistor,variable,wire Wound,non |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Nonturn Device Location | AT 9 OCLOCK |
| Body Diameter | 1.125 INCHES NOMINAL IN |
| Screw Thread Quantity Per Inch | 32.0 |
| Electrical Resistance Per Section | 1.0 KILOHMS SINGLE SECTION |
| Switch Voltage Rating in Volts | 250.0 |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 105.0 SINGLE SECTION |
| Section Quantity | 1 |
| Shaft Diameter | 0.250 INCHES MAXIMUM IN |
| Nonturn Device Radius | 0.531 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGED |
| Switch Operating Position | START OF ROTATION |
| Body Style | CYLINDRICAL BUSHING MOUNTED |
| Mounting Method | STANDARD BUSHING |
| Terminal Location | REAR-BOTTOM LOCATION NOT OTHERWISE SPECIFIED |
| Features Provided | SWITCH |
| Shaft Style | ROUND |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 1.250 INCHES NOMINAL IN |
| Body Length | 1.250 INCHES NOMINAL IN |
| Power Dissipation Rating Per Section in Watts | 2.0 FREE AIR SINGLE SECTION |
| Switch Type | ROTARY |
| Effective Electrical Rotation in Deg Angular Rotation | 300.0 NOMINAL |
| Screw Thread Diameter | 0.375 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Screw Thread Series Designator | UNEF |
| Actuator Travel Control Feature | STOPS |
| Resistance Tolerance Per Section in Percent | -5.0 TO 5.0 SINGLE SECTION |
| Switch Contact Arrangement | SINGLE POLE, DOUBLE THROW, THREE POSITIONS MAINTAINED |
| Terminal Type and Quantity | 6 TAB, SOLDER LUG |
| Rotary Actuator Travel in Angular Deg | 300.0 NOMINAL |
| 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 |
|---|---|
| 1801678-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 30429812 | 5/1 Secondary reference Clarostat Sensors and Controls |
NSN 5905-01-050-8399 is a Resistor,variable,wire Wound,non, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-050-8399 has 1 manufacturer part number on file: 1801678-1 (Northrop Grumman Systems Corporation).
Key specifications for 1801678-1: Nonturn Device Location: AT 9 OCLOCK; Body Diameter: 1.125 INCHES NOMINAL IN; Screw Thread Quantity Per Inch: 32.0; Electrical Resistance Per Section: 1.0 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.