The Resistor,variable,nonwire Wound,, cataloged under National Stock Number 5905-01-175-8135, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Bae Systems Space & Mission Systems Inc. Div Space & Mission Systems Inc.. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-01-175-8135 |
| Primary Part Number | 56688-1 |
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Bae Systems Space & Mission Systems Inc. Div Space & Mission Systems Inc. |
| Status | ACTIVE |
| Maximum Running Torque | 2.00 INCH-OUNCES IN |
| Screw Thread Quantity Per Inch | 32.0 |
| Electrical Resistance Per Section | 250.000 KILOHMS ALL SECTIONS |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 125.0 ALL SECTIONS |
| Section Quantity | 2 |
| Shaft Diameter | 0.125 INCHES NOMINAL IN |
| Body Style | RECTANGULAR BUSHING MOUNTED |
| Terminal Length | 0.500 INCHES NOMINAL IN |
| Mounting Method | LOCKING BUSHING |
| Body Width | 0.625 INCHES NOMINAL IN |
| Body Height | 0.625 INCHES NOMINAL IN |
| Maximum Starting Torque | 2.00 INCH-OUNCES IN |
| Temp Coefficient of Resistance Per Section in Ppm Per Deg Celsius | -150.0 TO 150.0 ALL SECTIONS |
| Terminal Location | LOWER ADJACENT SIDE TWO ROWS |
| Center to Center Distance Between Center Terminal and Outside Terminal | 0.200 INCHES NOMINAL IN |
| Features Provided | SHAFT LOCKING DEVICE |
| Shaft Style | ROUND, SLOTTED |
| Actuator Type | SINGLE SHAFT |
| Center to Center Distance Between Terminal Rows | 0.200 INCHES NOMINAL IN |
| Shaft Length | 0.625 INCHES NOMINAL IN |
| Body Length | 1.025 INCHES NOMINAL IN |
| Maximum Stop Torque | 64.00 INCH-OUNCES IN |
| Center to Center Distance Between Terminals | 0.200 INCHES NOMINAL IN |
| Power Dissipation Rating Per Section in Watts | 1.0 FREE AIR ALL SECTIONS |
| Effective Electrical Rotation in Deg Angular Rotation | 240.0 NOMINAL |
| Screw Thread Diameter | 0.250 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Screw Thread Series Designator | UNEF |
| Cubic Measure | 0.400 CUBIC INCHES |
| 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 |
|---|---|
| 81B2D-B20-A22/A22 | Bourns, Inc. Dba Bourns Sensor Controls (USA) |
| 81E2D-E20-A22/A22 | Bourns, Inc. Dba Bourns Sensor Controls (USA) |
| 56688-1 PRIMARY | Bae Systems Space & Mission Systems Inc. Div Space & Mission Systems Inc. (USA) |
| Reference | Meaning |
|---|---|
| 81E2DE20A22/A22 | 5/9 Secondary reference Bourns Inc |
| 81B2D-B20-A22/A22 | 5/9 Secondary reference Bourns Inc |
NSN 5905-01-175-8135 is a Resistor,variable,nonwire Wound,, manufactured by Bae Systems Space & Mission Systems Inc. Div Space & Mission Systems Inc., classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-175-8135 has 3 manufacturer part numbers on file: 81B2D-B20-A22/A22 (Bourns, Inc. Dba Bourns Sensor Controls), 81E2D-E20-A22/A22 (Bourns, Inc. Dba Bourns Sensor Controls), 56688-1 (Bae Systems Space & Mission Systems Inc. Div Space & Mission Systems Inc.).
Key specifications for 56688-1: Maximum Running Torque: 2.00 INCH-OUNCES IN; Screw Thread Quantity Per Inch: 32.0; Electrical Resistance Per Section: 250.000 KILOHMS ALL SECTIONS; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 125.0 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.