The Resistor,variable,wire Wound,pre, cataloged under National Stock Number 5905-00-902-5817, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Bourns Inc. Government technical data includes 29 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5905-00-902-5817 |
| Primary Part Number | 3500S-2-503L |
| Item Name | Resistor,variable,wire Wound,pre |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Bourns Inc |
| Status | ACTIVE |
| Nonturn Device Location | AT 7 OCLOCK |
| Body Diameter | 0.859 INCHES MINIMUM AND 0.891 INCHES MAXIMUM IN |
| Screw Thread Quantity Per Inch | 32.0 |
| Lateral Runout | 0.005 INCHES IN |
| Electrical Resistance Per Section | 50.0 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 |
| Nonturn Device Radius | 0.280 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN |
| Function Characteristic Per Section | SINGLE SECTION LINEAR |
| Body Style | CYLINDRICAL BUSHING MOUNTED |
| Function Conformity Tolerance Per Section | -0.20 TO 0.20 SINGLE SECTION |
| Shaft End Play | 0.00500 INCHES IN |
| Overall Diameter | 1.063 INCHES NOMINAL IN |
| Contact Arm Electrical Off Position | FULLY CCW-CW |
| Mounting Method | STANDARD BUSHING |
| 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 |
| Terminal Location | RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED |
| Shaft Style | ROUND, SLOTTED |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 0.796 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN |
| Body Length | 0.980 INCHES MINIMUM AND 1.020 INCHES MAXIMUM IN |
| Maximum Stop Torque | 48.00 INCH-OUNCES IN |
| Shaft Runout | 0.002 INCHES IN |
| Power Dissipation Rating Per Section in Watts | 2.0 FREE AIR SINGLE SECTION |
| Effective Electrical Rotation in Deg Angular Rotation | 3600.0 MINIMUM AND 3610.0 MAXIMUM |
| Pilot Diameter Runout | 0.00200 INCHES IN |
| Screw Thread Diameter | 0.375 INCHES NOMINAL 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 |
|---|---|
| 3500S-2-503L | Bourns Inc (USA) |
| 3500S-2-503L | Bourns Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 3500S-2-503 | C/1 Advisory reference — outside the item-of-supply concept Bourns Inc |
| CE185066Q | 5/9 Secondary reference Parker Hannifin Limited |
| 3500S2-503 | 3/9 Design control — primary reference U.S. Government activity |
| 099619D | 5/9 Secondary reference Arrow Electronics (uk) Ltd |
| 32-5309 | 5/9 Secondary reference Racal Instruments Ltd |
| 32-5309 | 5/9 Secondary reference Racal Instruments Wireless Solutions Ltd, an Aeroflex Company |
| 3500S2-503 | 5/9 Secondary reference Bourns Ltd |
NSN 5905-00-902-5817 is a Resistor,variable,wire Wound,pre, manufactured by Bourns Inc, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-902-5817 has 2 manufacturer part numbers on file: 3500S-2-503L (Bourns Inc), 3500S-2-503L (Bourns Ltd).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-120-0981. Verify interchangeability with system specifications before substitution.
Key specifications for 3500S-2-503L: Nonturn Device Location: AT 7 OCLOCK; Body Diameter: 0.859 INCHES MINIMUM AND 0.891 INCHES MAXIMUM IN; Screw Thread Quantity Per Inch: 32.0; Lateral Runout: 0.005 INCHES IN. 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.