The Resistor,variable,wire Wound,pre, cataloged under National Stock Number 5905-00-321-1665, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Sensor Systems, L.l.c. Dba Sensor Systems Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5905-00-321-1665 |
| Primary Part Number | 7903906 |
| Item Name | Resistor,variable,wire Wound,pre |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Sensor Systems, L.l.c. Dba Sensor Systems Llc |
| Status | ACTIVE |
| Maximum Running Torque | 0.60 INCH-OUNCES IN |
| Body Diameter | 1.094 INCHES MAXIMUM IN |
| Lateral Runout | 0.001 INCHES IN |
| Electrical Resistance Per Section | 5.0 KILOHMS SINGLE SECTION |
| Mounting Lip Depth | 0.0570 INCHES MINIMUM AND 0.0670 INCHES MAXIMUM IN |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 125.0 SINGLE SECTION |
| Undercut Width | 0.0570 INCHES MINIMUM IN |
| Section Quantity | 1 |
| Shaft Diameter | 0.1246 INCHES MINIMUM AND 0.1249 INCHES MAXIMUM IN |
| Undercut Diameter | 0.975 INCHES MAXIMUM IN |
| Fragility Factor | MODERATELY RUGGED |
| Function Characteristic Per Section | SINGLE SECTION LINEAR |
| Body Style | CYLINDRICAL SERVO MOUNTED |
| Function Conformity Tolerance Per Section | -0.015 TO 0.015 SINGLE SECTION |
| Shaft End Play | 0.005 INCHES IN |
| Tap Location From Ccw Terminal Per Section in Ohms | 2500.0 SINGLE SECTION |
| Mounting Method | CLAMP RING(S) |
| Maximum Starting Torque | 0.60 INCH-OUNCES IN |
| Temp Coefficient of Resistance Wire Per Section in Ppm Per Deg Celsius | -20.0 TO 20.0 SINGLE SECTION |
| Fixed Tap Quantity Per Section | 1 SINGLE SECTION |
| Terminal Location | RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED |
| Mounting Lip Diameter | 1.0570 INCHES MINIMUM AND 1.0670 INCHES MAXIMUM IN |
| Features Provided | HUMIDITY PROOF |
| Shaft Style | ROUND, SLOTTED |
| Actuator Type | DOUBLE ENDED SHAFT |
| Shaft Length | 0.290 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN |
| Pilot Diameter | 0.9683 INCHES MINIMUM AND 0.9688 INCHES MAXIMUM IN |
| Body Length | 1.000 INCHES MAXIMUM IN |
| Shaft Runout | 0.001 INCHES IN |
| Pilot Length | 0.0570 INCHES MINIMUM AND 0.0670 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 7903906 PRIMARY | Sensor Systems, L.l.c. Dba Sensor Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 7903906 | 1/2 Source control — Government-approved source U.S. Government activity |
| 7903906 | 5/9 Secondary reference Bei Sensors & Systems Company, Inc. Dba Bei Duncan |
NSN 5905-00-321-1665 is a Resistor,variable,wire Wound,pre, manufactured by Sensor Systems, L.l.c. Dba Sensor Systems Llc, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-321-1665 has 1 manufacturer part number on file: 7903906 (Sensor Systems, L.l.c. Dba Sensor Systems Llc).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-050-1463. Verify interchangeability with system specifications before substitution.
Key specifications for 7903906: Maximum Running Torque: 0.60 INCH-OUNCES IN; Body Diameter: 1.094 INCHES MAXIMUM IN; Lateral Runout: 0.001 INCHES IN; Electrical Resistance Per Section: 5.0 KILOHMS 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.