The Resolver,electrical, cataloged under National Stock Number 5990-00-503-4142, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 28 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-00-503-4142 |
| Primary Part Number | 788378 |
| Item Name | Resolver,electrical |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Body Size | 15 |
| Shaft Type | ROUND SINGLE SHAFT |
| Shaft Radial Play Test Point | 0.188 INCHES NOMINAL IN |
| Flange Diameter | 1.4320 INCHES MINIMUM AND 1.4370 INCHES MAXIMUM IN |
| Undercut Width | 0.0780 INCHES NOMINAL IN |
| Shaft Diameter | 0.1868 INCHES MINIMUM AND 0.1870 INCHES MAXIMUM SINGLE SHAFT IN |
| Length | 0.1320 INCHES NOMINAL SHOULDER IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | STANDARD ROUND B |
| Flange Thickness | 0.0930 INCHES NOMINAL IN |
| Shaft Maximum Runout | 0.0003 INCHES IN |
| Alignment Hole Bolt Circle Diameter | 1.0970 INCHES MINIMUM AND 1.1030 INCHES MAXIMUM IN |
| Mounting Facility Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Mounting Surface to Terminal End Distance | 1.9380 INCHES NOMINAL IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Terminal Location | REAR |
| Rotor Input Voltage Rating in Volts | 0.5 MINIMUM AND 12.0 MAXIMUM |
| Shaft End Play Determining Weight | 16.0 OUNCES OZ |
| Shaft Maximum Radial Play | 0.0004 INCHES IN |
| Alignment Hole Quantity | 4 |
| Shaft Length | 0.5300 INCHES MINIMUM AND 0.5500 INCHES MAXIMUM SINGLE SHAFT IN |
| Pilot Diameter | 0.8745 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN |
| Shoulder Diameter | 1.3115 INCHES MINIMUM AND 1.3120 INCHES MAXIMUM IN |
| Mounting Facility Nominal Screw Thread Diameter | 0.112 INCHES IN |
| Alignment Hole Depth | 0.1250 INCHES NOMINAL IN |
| Transformation Ratio | 1.000 STATOR TO ROTOR NOMINAL |
| Pilot Length | 0.0400 INCHES NOMINAL IN |
| Terminal Type and Quantity | 14 PIN |
| 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 |
|---|---|
| 788420 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 788378 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 03AB21 | 5/9 Secondary reference Arma Div Ambac Industries Inc |
NSN 5990-00-503-4142 is a Resolver,electrical, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-00-503-4142 has 2 manufacturer part numbers on file: 788420 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 788378 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 788378: Body Size: 15; Shaft Type: ROUND SINGLE SHAFT; Shaft Radial Play Test Point: 0.188 INCHES NOMINAL IN; Flange Diameter: 1.4320 INCHES MINIMUM AND 1.4370 INCHES MAXIMUM IN. 28 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.