The Resistor,variable,wire Wound,pre, cataloged under National Stock Number 5905-00-930-3989, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5905-00-930-3989 |
| Primary Part Number | 900056-0004 |
| Item Name | Resistor,variable,wire Wound,pre |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Maximum Running Torque | 0.30 INCH-OUNCES IN |
| Body Diameter | 0.880 INCHES MAXIMUM IN |
| Electrical Resistance Per Section | 25.0 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 0.1248 INCHES MAXIMUM IN |
| Undercut Diameter | 0.750 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGED |
| 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 | 0.005 INCHES IN |
| Mounting Method | CLAMP RING(S) |
| Maximum Starting Torque | 0.20 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 | LONGITUDINALLY POSITIONED ON THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED |
| Mounting Lip Diameter | 0.8700 INCHES MINIMUM AND 0.8800 INCHES MAXIMUM IN |
| Features Provided | HUMIDITY PROOF |
| Shaft Style | ROUND |
| Actuator Type | SINGLE SHAFT |
| Shaft Length | 0.828 INCHES MINIMUM AND 0.858 INCHES MAXIMUM IN |
| Pilot Diameter | 0.7497 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN |
| Body Length | 1.376 INCHES MAXIMUM IN |
| Maximum Stop Torque | 200.00 INCH-OUNCES IN |
| Shaft Runout | 0.001 INCHES IN |
| Pilot Length | 0.0570 INCHES MINIMUM AND 0.0670 INCHES MAXIMUM IN |
| Tap Location Tolerance Per Section | -1.0 TO 1.0 DEG ANGULAR ROTATION SINGLE SECTION |
| 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 |
|---|---|
| 500-5560 | Vishay Sprague Inc (USA) |
| 900056-0004 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| MD09-10-2686 | Sensor Systems, L.l.c. Dba Sensor Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 900056-4 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
NSN 5905-00-930-3989 is a Resistor,variable,wire Wound,pre, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5905, Resistor. Status: active.
NSN 5905-00-930-3989 has 3 manufacturer part numbers on file: 500-5560 (Vishay Sprague Inc), 900056-0004 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), MD09-10-2686 (Sensor Systems, L.l.c. Dba Sensor Systems Llc).
4 possible matches (shared part number, not a government interchangeability claim): 5930-01-243-4275, 2910-01-541-1139, 5330-01-629-7908. Verify interchangeability with system specifications before substitution.
Key specifications for 900056-0004: Maximum Running Torque: 0.30 INCH-OUNCES IN; Body Diameter: 0.880 INCHES MAXIMUM IN; Electrical Resistance Per Section: 25.0 KILOHMS SINGLE SECTION; Mounting Lip Depth: 0.0570 INCHES MINIMUM AND 0.0670 INCHES MAXIMUM 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.