The Resistor,variable,nonwire Wound,, cataloged under National Stock Number 5905-01-313-4417, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5905-01-313-4417 |
| Primary Part Number | 81C1A-E20-B26 |
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Bourns, Inc. Dba Bourns Sensor Controls |
| Status | ACTIVE |
| Maximum Running Torque | 6.00 INCH-OUNCES IN |
| Screw Thread Quantity Per Inch | 32.0 |
| Electrical Resistance Per Section | 2.5 MEGOHMS SINGLE SECTION |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 100.0 SINGLE SECTION |
| Section Quantity | 1 |
| Shaft Diameter | 0.124 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN |
| Shaft Bearing Type | SLEEVE |
| Nonturn Device Radius | 0.305 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | RECTANGULAR BUSHING MOUNTED |
| Mounting Method | STANDARD BUSHING |
| Body Width | 0.625 INCHES NOMINAL IN |
| Body Height | 0.625 INCHES NOMINAL IN |
| Maximum Starting Torque | 6.00 INCH-OUNCES IN |
| Terminal Location | LOWER ADJACENT SIDE TWO ROWS |
| Features Provided | HUMIDITY PROOF |
| Shaft Style | ROUND, SLOTTED |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN |
| Body Length | 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN |
| Power Dissipation Rating Per Section in Watts | 0.75 FREE AIR SINGLE SECTION |
| Screw Thread Diameter | 0.250 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Screw Thread Series Designator | UNEF |
| Cubic Measure | 0.256 CUBIC INCHES |
| Resistance Tolerance Per Section in Percent | -20.0 TO 20.0 SINGLE SECTION |
| Terminal Type and Quantity | 3 TAB, SOLDER LUG |
| Mounting Bushing Length | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN |
| Device Design Type | NONTURN AT 9:00 OCLOCKUNABLE TO DECODE |
| 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 |
|---|---|
| 81C1A-E20-B26 | Bourns, Inc. Dba Bourns Sensor Controls (USA) |
| Reference | Meaning |
|---|---|
| 81C1A-E20-B26 | 5/9 Secondary reference Bourns Inc |
| 27M870 | 5/9 Secondary reference Rockwell Automation, Inc. Dba Rockwell Automation |
| 311-1973-00 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5905-01-313-4417 is a Resistor,variable,nonwire Wound,, manufactured by Bourns, Inc. Dba Bourns Sensor Controls, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-313-4417 has 1 manufacturer part number on file: 81C1A-E20-B26 (Bourns, Inc. Dba Bourns Sensor Controls).
Key specifications for 81C1A-E20-B26: Maximum Running Torque: 6.00 INCH-OUNCES IN; Screw Thread Quantity Per Inch: 32.0; Electrical Resistance Per Section: 2.5 MEGOHMS SINGLE SECTION; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 100.0 SINGLE SECTION. 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.