The Resistor,variable,nonwire Wound,, cataloged under National Stock Number 5905-01-078-1550, 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 29 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-01-078-1550 |
| Primary Part Number | 81C1D-D20-BA0/246 |
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Bourns, Inc. Dba Bourns Sensor Controls |
| Status | ACTIVE |
| Screw Thread Quantity Per Inch | 32.0 |
| Electrical Resistance Per Section | 5.000 KILOHMS SINGLE SECTION |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 120.0 SINGLE SECTION |
| Section Quantity | 1 |
| Shaft Diameter | 0.124 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN |
| Body Style | RECTANGULAR BUSHING MOUNTED |
| Terminal Length | 0.500 INCHES MINIMUM IN |
| Mounting Method | STANDARD BUSHING |
| Body Width | 0.625 INCHES NOMINAL IN |
| Body Height | 0.625 INCHES NOMINAL IN |
| Terminal Location | LOWER ADJACENT SIDE TWO ROWS |
| Center to Center Distance Between Center Terminal and Outside Terminal | 0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN |
| Shaft Style | ROUND |
| Actuator Type | DOUBLE ENDED SHAFT |
| Center to Center Distance Between Terminal Rows | 0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN |
| Shaft Length | 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN |
| Body Length | 0.625 INCHES NOMINAL IN |
| Center to Center Distance Between Terminals | 0.400 INCHES NOMINAL IN |
| Power Dissipation Rating Per Section in Watts | 1.0 FREE AIR SINGLE SECTION |
| Effective Electrical Rotation in Deg Angular Rotation | 260.0 NOMINAL |
| Screw Thread Diameter | 0.250 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Screw Thread Series Designator | UNEF |
| Actuator Travel Control Feature | STOPS |
| Resistance Tolerance Per Section in Percent | -20.0 TO 20.0 SINGLE SECTION |
| Terminal Type and Quantity | 3 PIN |
| Rotary Actuator Travel in Angular Deg | 300.0 NOMINAL |
| Mounting Bushing Length | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN |
| Ambient Temp in Deg Celsius Per Section at Full Rated Power | 70.0 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 |
|---|---|
| 81C1D-D20-BA0/246 | Bourns, Inc. Dba Bourns Sensor Controls (USA) |
| Reference | Meaning |
|---|---|
| 81C1D-D20-BA0246 | 5/9 Secondary reference Bourns Inc |
| 311-1719-00 | 3/2 Design control — primary reference U.S. Government activity |
| 13M058 | 5/9 Secondary reference Rockwell Automation, Inc. Dba Rockwell Automation |
NSN 5905-01-078-1550 is a Resistor,variable,nonwire Wound,, manufactured by Bourns, Inc. Dba Bourns Sensor Controls, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-078-1550 has 1 manufacturer part number on file: 81C1D-D20-BA0/246 (Bourns, Inc. Dba Bourns Sensor Controls).
Key specifications for 81C1D-D20-BA0/246: Screw Thread Quantity Per Inch: 32.0; Electrical Resistance Per Section: 5.000 KILOHMS SINGLE SECTION; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 120.0 SINGLE SECTION; Section Quantity: 1. 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.