The Resistor,variable,nonwire Wound,, cataloged under National Stock Number 5905-01-100-6935, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Viasys Respiratory Care Inc. Dba Biosys Healthcare. Government technical data includes 28 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-01-100-6935 |
| Primary Part Number | 89WR20K |
| Item Name | Resistor,variable,nonwire Wound, |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Viasys Respiratory Care Inc. Dba Biosys Healthcare |
| Status | ACTIVE |
| Maximum Running Torque | 8.00 INCH-OUNCES IN |
| Electrical Resistance Per Section | 20.000 KILOHMS SINGLE SECTION |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 125.0 SINGLE SECTION |
| Section Quantity | 1 |
| Shaft Diameter | 0.060 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | RECTANGULAR |
| Terminal Length | 0.165 INCHES MINIMUM IN |
| Mounting Method | TERMINAL |
| Body Width | 0.190 INCHES NOMINAL IN |
| Body Height | 0.250 INCHES NOMINAL IN |
| Maximum Starting Torque | 8.00 INCH-OUNCES IN |
| Temp Coefficient of Resistance Per Section in Ppm Per Deg Celsius | -100.0 TO 100.0 SINGLE SECTION |
| Terminal Location | LOWER ADJACENT SIDE TWO ROWS |
| Center to Center Distance Between Center Terminal and Outside Terminal | 0.200 INCHES NOMINAL IN |
| Features Provided | HUMIDITY PROOF |
| Shaft Style | ROUND, SLOTTED |
| Actuator Type | SINGLE SHAFT |
| Center to Center Distance Between Terminal Rows | 0.200 INCHES NOMINAL IN |
| Shaft Length | 0.100 INCHES NOMINAL IN |
| Body Length | 0.750 INCHES NOMINAL IN |
| Center to Center Distance Between Terminals | 0.500 INCHES NOMINAL IN |
| Power Dissipation Rating Per Section in Watts | 0.75 FREE AIR SINGLE SECTION |
| Effective Electrical Rotation in Deg Angular Rotation | 5400.0 NOMINAL |
| Reliability Indicator | NOT ESTABLISHED |
| Actuator Travel Control Feature | CLUTCH |
| Resistance Tolerance Per Section in Percent | -10.0 TO 10.0 SINGLE SECTION |
| Terminal Type and Quantity | 3 PIN |
| 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 |
|---|---|
| 89WR20K | Bi Technologies Corporation Div Bi Technologies Corp. (USA) |
| 89WR20K PRIMARY | Viasys Respiratory Care Inc. Dba Biosys Healthcare (USA) |
| Reference | Meaning |
|---|---|
| 107176 | 5/9 Secondary reference Systron-Donner Corp Microwave/instrument Div |
| 1215-0021 | 5/9 Secondary reference Cushman Electronics Inc |
NSN 5905-01-100-6935 is a Resistor,variable,nonwire Wound,, manufactured by Viasys Respiratory Care Inc. Dba Biosys Healthcare, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-100-6935 has 2 manufacturer part numbers on file: 89WR20K (Bi Technologies Corporation Div Bi Technologies Corp.), 89WR20K (Viasys Respiratory Care Inc. Dba Biosys Healthcare).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-126-5629. Verify interchangeability with system specifications before substitution.
Key specifications for 89WR20K: Maximum Running Torque: 8.00 INCH-OUNCES IN; Overall Height: 0.405 INCHES MINIMUM IN; Electrical Resistance Per Section: 20.000 KILOHMS SINGLE SECTION; Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 125.0 SINGLE SECTION. 28 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.