The Resistor,variable,wire Wound,pre, cataloged under National Stock Number 5905-00-593-8230, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5905-00-593-8230 |
| Primary Part Number | 61-958 |
| Item Name | Resistor,variable,wire Wound,pre |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Maximum Running Torque | 1.30 INCH-OUNCES IN |
| Body Diameter | 3.016 INCHES NOMINAL IN |
| Electrical Resistance Per Section | 2.5 KILOHMS SINGLE SECTION |
| Mounting Lip Depth | 0.0930 INCHES NOMINAL IN |
| Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power | 125.0 SINGLE SECTION |
| Undercut Width | 0.0730 INCHES NOMINAL IN |
| Section Quantity | 1 |
| Shaft Diameter | 0.250 INCHES NOMINAL IN |
| Undercut Diameter | 2.825 INCHES NOMINAL IN |
| Function Characteristic Per Section | SINGLE SECTION LINEAR |
| Body Style | CYLINDRICAL SERVO MOUNTED |
| Function Conformity Tolerance Per Section | -0.10 TO 0.10 SINGLE SECTION |
| Shaft End Play | 0.001 INCHES IN |
| Tap Location From Ccw Terminal Per Section in Ohms | 1250.0 SINGLE SECTION |
| Mounting Method | CLAMP RING(S) |
| Maximum Starting Torque | 2.20 INCH-OUNCES IN |
| 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 | 3.0000 INCHES NOMINAL IN |
| Shaft Style | ROUND, SLOTTED |
| Actuator Type | DOUBLE ENDED SHAFT |
| Shaft Length | 0.875 INCHES NOMINAL IN |
| Pilot Diameter | 2.8742 INCHES NOMINAL IN |
| Body Length | 1.613 INCHES NOMINAL IN |
| Shaft Runout | 0.001 INCHES IN |
| Pilot Length | 0.0620 INCHES NOMINAL IN |
| Power Dissipation Rating Per Section in Watts | 0.4 FREE AIR SINGLE SECTION |
| Effective Electrical Rotation in Deg Angular Rotation | 360.0 NOMINAL |
| Reliability Indicator | NOT ESTABLISHED |
| Shaft Radial Play | 0.002 INCHES 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 |
|---|---|
| 61-958 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| Reference | Meaning |
|---|---|
| 1225785 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5905-00-593-8230 is a Resistor,variable,wire Wound,pre, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-593-8230 has 1 manufacturer part number on file: 61-958 (Lockheed Martin Corporation Div Rms - Mitchel Field).
2 possible matches (shared part number, not a government interchangeability claim): 9540-01-029-8275, 5331-01-084-1085. Verify interchangeability with system specifications before substitution.
Key specifications for 61-958: Maximum Running Torque: 1.30 INCH-OUNCES IN; Body Diameter: 3.016 INCHES NOMINAL IN; Electrical Resistance Per Section: 2.5 KILOHMS SINGLE SECTION; Mounting Lip Depth: 0.0930 INCHES NOMINAL 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.