The Resistor,variable,wire Wound,pre, cataloged under National Stock Number 5905-01-154-0228, is classified within Federal Supply Class 5905 (Resistor) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Litef Gmbh. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5905-01-154-0228 |
| Primary Part Number | 103438 |
| Item Name | Resistor,variable,wire Wound,pre |
| FSC / FSG | 5905 / 59 — Resistor |
| Manufacturer | Northrop Grumman Litef Gmbh |
| Status | ACTIVE |
| Maximum Running Torque | 0.30 INCH-OUNCES IN |
| Body Diameter | 1.125 INCHES MAXIMUM IN |
| Lateral Runout | 0.002 INCHES IN |
| Electrical Resistance Per Section | 20.000 OHMS SINGLE SECTION |
| Mounting Lip Depth | 0.0620 INCHES NOMINAL 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 | 0.125 INCHES NOMINAL IN |
| Undercut Diameter | 0.975 INCHES MAXIMUM 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 | 0.00500 INCHES IN |
| Mounting Method | CLAMP RING(S) |
| Maximum Starting Torque | 0.50 INCH-OUNCES IN |
| Temp Coefficient of Resistance Per Section in Ppm Per Deg Celsius | -50.0 TO 50.0 SINGLE SECTION |
| Terminal Location | RADIALLY POSITIONED OVER LESS THAN HALF THE CIRCUMFERENCE LOCATION NOT OTHERWISE SPECIFIED |
| Mounting Lip Diameter | 1.0620 INCHES NOMINAL IN |
| Shaft Style | ROUND |
| Actuator Type | DUAL CONCENTRIC |
| Shaft Length | 0.625 INCHES NOMINAL IN |
| Specification/standard Data | 81349-MIL-R-12934/2 GOVERNMENT SPECIFICATION |
| Pilot Diameter | 0.9688 INCHES NOMINAL IN |
| Body Length | 1.437 INCHES MAXIMUM IN |
| Maximum Stop Torque | 0.50 INCH-OUNCES IN |
| Shaft Runout | 0.002 INCHES IN |
| Pilot Length | 0.0620 INCHES NOMINAL IN |
| Power Dissipation Rating Per Section in Watts | 1.25 FREE AIR SINGLE SECTION |
| Effective Electrical Rotation in Deg Angular Rotation | 360.0 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 |
|---|---|
| 103438 | Northrop Grumman Litef Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| MIL-R-12934/2 | 5/9 Secondary reference U.S. Government activity |
| MIL-PRF-12934/2 | 4/1 Identification reference U.S. Government activity |
| RR1100C2A7J200 | 2/2 Government specification standardization U.S. Government activity |
NSN 5905-01-154-0228 is a Resistor,variable,wire Wound,pre, manufactured by Northrop Grumman Litef Gmbh, classified under FSC 5905, Resistor. Status: active.
NSN 5905-01-154-0228 has 1 manufacturer part number on file: 103438 (Northrop Grumman Litef Gmbh).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-685-7672. Verify interchangeability with system specifications before substitution.
Key specifications for 103438: Maximum Running Torque: 0.30 INCH-OUNCES IN; Body Diameter: 1.125 INCHES MAXIMUM IN; Lateral Runout: 0.002 INCHES IN; Electrical Resistance Per Section: 20.000 OHMS 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.