The Synchro,control Transformer, cataloged under National Stock Number 5990-01-012-0199, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Ge Aviation Systems Llc. Government technical data includes 29 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-01-012-0199 |
| Primary Part Number | 136790-03 |
| Item Name | Synchro,control Transformer |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Ge Aviation Systems Llc |
| Status | ACTIVE |
| Body Size | 8 |
| Shaft Type | ROUND, SLOTTED SINGLE SHAFT |
| Flange Diameter | 0.7500 INCHES NOMINAL IN |
| Undercut Width | 0.0620 INCHES NOMINAL IN |
| Shaft Diameter | 0.0900 INCHES NOMINAL SINGLE SHAFT IN |
| Rotor DC Resistance in Ohms | 310.00 NOMINAL |
| Undercut Diameter | 0.6910 INCHES NOMINAL IN |
| Body Style | STANDARD ROUND A |
| Flange Thickness | 0.0620 INCHES NOMINAL IN |
| Stator Input Current Rating | 30.0 MILLIAMPERES NOMINAL |
| Phase Shift Angle in Deg | 8.000 OUTPUT TO INPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 1.2400 INCHES NOMINAL IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Stator Input Electrical Power Rating | 60.0 MILLIWATTS NOMINAL |
| Terminal Location | REAR |
| Shaft Length | 0.3750 INCHES NOMINAL SINGLE SHAFT IN |
| Pilot Diameter | 0.5000 INCHES NOMINAL IN |
| Stator Input Voltage Rating in Volts | 10.2 NOMINAL |
| Maximum Total Null Voltage Output in Millivolts Per Volt | 40.00 |
| Shaft Slot Width | 0.0250 INCHES NOMINAL SINGLE SHAFT IN |
| Pilot Length | 0.0400 INCHES NOMINAL IN |
| Electrical Error Angular Range in Minutes | -15.0 TO 15.0 |
| Actuator Friction Torque at Plus 25 Deg Celsius | 3.00 CENTIMETER-GRAMS NOMINAL CM |
| Actuator Friction Torque at Minus 55 Deg Celsius | 6.00 CENTIMETER-GRAMS NOMINAL CM |
| Material | STEEL CORROSION RESISTING BODY |
| Terminal Type and Quantity | 5 WIRE LEAD |
| Maximum Temp Rise | 3.0 CELSIUS DEGC |
| Stator DC Resistance in Ohms | 65.00 NOMINAL |
| Shaft Slot Depth | 0.0260 INCHES NOMINAL SINGLE SHAFT 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 |
|---|---|
| 136790-03 | Ge Aviation Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| HTC8DD4/L831 | 3/2 Design control — primary reference U.S. Government activity |
| 4277-14-02 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5990-01-012-0199 is a Synchro,control Transformer, manufactured by Ge Aviation Systems Llc, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-01-012-0199 has 1 manufacturer part number on file: 136790-03 (Ge Aviation Systems Llc).
Key specifications for 136790-03: Body Size: 8; Shaft Type: ROUND, SLOTTED SINGLE SHAFT; Flange Diameter: 0.7500 INCHES NOMINAL IN; Undercut Width: 0.0620 INCHES NOMINAL 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.