The Synchro,control Transformer, cataloged under National Stock Number 5990-00-773-9771, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-00-773-9771 |
| Item Name | Synchro,control Transformer |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Status | ACTIVE |
| Body Size | 8 |
| Shaft Type | ROUND, SLOTTED SINGLE SHAFT |
| Flange Diameter | 0.7490 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN |
| Undercut Width | 0.0620 INCHES NOMINAL IN |
| Shaft Diameter | 0.0895 INCHES MINIMUM AND 0.0900 INCHES MAXIMUM SINGLE SHAFT IN |
| Undercut Diameter | 0.6880 INCHES MINIMUM AND 0.6910 INCHES MAXIMUM IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | STANDARD ROUND A |
| Flange Thickness | 0.0620 INCHES NOMINAL IN |
| Stator Input Current Rating | 94.0 MILLIAMPERES NOMINAL |
| Phase Shift Angle in Deg | 9.000 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 1.2410 INCHES MAXIMUM IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Stator Input Electrical Power Rating | 250.0 MILLIWATTS NOMINAL |
| Plus J Zso Reactance in Ohms | 105.00 NOMINAL |
| Zrs Resistance in Ohms | 36.10 NOMINAL |
| Terminal Location | REAR |
| Shaft Length | 0.5430 INCHES NOMINAL SINGLE SHAFT IN |
| Pilot Diameter | 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Stator Input Voltage Rating in Volts | 10.2 NOMINAL |
| Maximum Total Null Voltage Output in Millivolts Per Volt | 30.00 |
| Shaft Slot Width | 0.0470 INCHES NOMINAL SINGLE SHAFT IN |
| Transformation Ratio | 2.250 ROTOR TO STATOR NOMINAL |
| Pilot Length | 0.0430 INCHES NOMINAL IN |
| Zso Resistance in Ohms | 28.00 NOMINAL |
| Electrical Error Angular Range in Minutes | -10.0 TO 10.0 |
| Actuator Friction Torque at Plus 25 Deg Celsius | 3.0 CENTIMETER-GRAMS NOMINAL CM |
| Actuator Friction Torque at Minus 55 Deg Celsius | 9.0 CENTIMETER-GRAMS NOMINAL CM |
| Material | STEEL CORROSION RESISTING BODY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| AY305S-15A1 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
| 35630809043 | 5/2 Secondary reference U.S. Government activity |
| 35630809043 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
| AY305S-15A1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5990-00-773-9771 is a Synchro,control Transformer, classified under FSC 5990, Synchros and Resolvers. Status: active.
Key specifications for 5990-00-773-9771: Body Size: 8; Shaft Type: ROUND, SLOTTED SINGLE SHAFT; Flange Diameter: 0.7490 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM 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.
NSN 5990-00-773-9771 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.