The Resistor,variable,wire Wound,non, cataloged under National Stock Number 5905-01-087-3663, 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-01-087-3663 |
| Primary Part Number | 81Z1D-EZ20-BA0/423 |
| Item Name | Resistor,variable,wire Wound,non |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Bourns, Inc. Dba Bourns Sensor Controls |
| Status | ACTIVE |
| Maximum Running Torque | 4.00 INCH-OUNCES IN |
| Screw Thread Quantity Per Inch | 32.0 |
| Electrical Resistance Per Section | 500.0 KILOHMS SINGLE SECTION |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 125.0 SINGLE SECTION |
| Section Quantity | 1 |
| Shaft Diameter | 0.250 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | RECTANGULAR BUSHING MOUNTED |
| Terminal Length | 0.500 INCHES NOMINAL IN |
| Mounting Method | STANDARD BUSHING |
| Body Width | 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Body Height | 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Maximum Starting Torque | 4.00 INCH-OUNCES IN |
| Terminal Location | LOWER ADJACENT SIDE TWO ROWS LOCATION NOT OTHERWISE SPECIFIED |
| Center to Center Distance Between Center Terminal and Outside Terminal | 0.185 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Features Provided | HUMIDITY PROOF |
| Shaft Style | ROUND |
| Actuator Type | SINGLE SHAFT |
| Center to Center Distance Between Terminal Rows | 0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Shaft Length | 0.625 INCHES NOMINAL IN |
| Body Length | 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN |
| Maximum Stop Torque | 64.00 INCH-OUNCES IN |
| Center to Center Distance Between Terminals | 0.185 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Power Dissipation Rating Per Section in Watts | 1.0 FREE AIR SINGLE SECTION |
| Effective Electrical Rotation in Deg Angular Rotation | 295.0 MINIMUM AND 305.0 MAXIMUM |
| Screw Thread Diameter | 0.375 INCHES NOMINAL IN |
| Bearing Type | SLEEVE SHAFT |
| Reliability Indicator | NOT ESTABLISHED |
| Screw Thread Series Designator | UNEF |
| Cubic Measure | 0.263 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 |
|---|---|
| 81Z1D-EZ20-BA0/423 | Bourns, Inc. Dba Bourns Sensor Controls (USA) |
| Reference | Meaning |
|---|---|
| 81Z1D Z20 BA0423 | 5/9 Secondary reference Bourns Inc |
| 311-1854-00 | 3/2 Design control — primary reference U.S. Government activity |
| 14M403 | 5/9 Secondary reference Rockwell Automation, Inc. Dba Rockwell Automation |
NSN 5905-01-087-3663 is a Resistor,variable,wire Wound,non, manufactured by Bourns, Inc. Dba Bourns Sensor Controls, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-087-3663 has 1 manufacturer part number on file: 81Z1D-EZ20-BA0/423 (Bourns, Inc. Dba Bourns Sensor Controls).
Key specifications for 81Z1D-EZ20-BA0/423: Maximum Running Torque: 4.00 INCH-OUNCES IN; Screw Thread Quantity Per Inch: 32.0; Electrical Resistance Per Section: 500.0 KILOHMS SINGLE SECTION; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 125.0 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.