The Resistor,variable,wire Wound,pre, cataloged under National Stock Number 5905-01-030-8750, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Bei Sensors & Systems Company, Inc. Dba Bei Duncan. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5905-01-030-8750 |
| Primary Part Number | 1500-958 |
| Item Name | Resistor,variable,wire Wound,pre |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Bei Sensors & Systems Company, Inc. Dba Bei Duncan |
| Status | ACTIVE |
| Maximum Running Torque | 4.00 INCH-OUNCES IN |
| Body Diameter | 1.820 INCHES MAXIMUM IN |
| Screw Thread Quantity Per Inch | 32.0 |
| Lateral Runout | 0.001 INCHES IN |
| Electrical Resistance Per Section | 20.0 KILOHMS ALL SECTIONS |
| Switch Voltage Rating in Volts | 115.0 AND 28.0 |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 125.0 ALL SECTIONS |
| Section Quantity | 2 |
| Shaft Diameter | 0.2494 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Fragility Factor | MODERATELY RUGGED |
| Switch Operating Position | START OF LINEAR MOVEMENT |
| Function Characteristic Per Section | ALL SECTIONS LINEAR |
| Body Style | CYLINDRICAL BUSHING MOUNTED |
| Function Conformity Tolerance Per Section | -1.00 TO 1.00 ALL SECTIONS |
| Shaft End Play | 0.005 INCHES IN |
| Mounting Method | STANDARD BUSHING |
| Maximum Starting Torque | 4.00 INCH-OUNCES IN |
| Fixed Tap Quantity Per Section | 1 ALL SECTIONS |
| Temp Coefficient of Resistance Per Section in Ppm Per Deg Celsius | -30.0 TO 30.0 ALL SECTIONS |
| Terminal Location | RADIALLY POSITIONED OVER MORE THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED |
| Features Provided | SWITCH |
| Shaft Style | ROUND |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 0.844 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN |
| Body Length | 2.269 INCHES MAXIMUM IN |
| Shaft Runout | 0.001 INCHES IN |
| Tap Location Tolerance Per Section | -2.0 TO 2.0 DEG ANGULAR ROTATION ALL SECTIONS |
| Power Dissipation Rating Per Section in Watts | 2.0 FREE AIR 1ST SECTION AND 1.5 FREE AIR 2ND SECTION |
| Switch Type | SENSITIVE |
| Effective Electrical Rotation in Deg Angular Rotation | 270.0 NOMINAL |
| 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 |
|---|---|
| 1500-958 | Bei Sensors & Systems Company, Inc. Dba Bei Duncan (USA) |
| Reference | Meaning |
|---|---|
| 1500-871 | C/1 Advisory reference — outside the item-of-supply concept Bei Sensors & Systems Company, Inc. Dba Bei Duncan |
| SM-A-720145-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5905-01-030-8750 is a Resistor,variable,wire Wound,pre, manufactured by Bei Sensors & Systems Company, Inc. Dba Bei Duncan, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-030-8750 has 1 manufacturer part number on file: 1500-958 (Bei Sensors & Systems Company, Inc. Dba Bei Duncan).
1 possible match (shared part number, not a government interchangeability claim): 2940-01-377-2877. Verify interchangeability with system specifications before substitution.
Key specifications for 1500-958: Maximum Running Torque: 4.00 INCH-OUNCES IN; Body Diameter: 1.820 INCHES MAXIMUM IN; Screw Thread Quantity Per Inch: 32.0; Lateral Runout: 0.001 INCHES IN. 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.