The Synchro,control Transformer, cataloged under National Stock Number 5990-00-686-4446, 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29 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-00-686-4446 |
| Item Name | Synchro,control Transformer |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Status | ACTIVE |
| Body Size | 10 |
| Shaft Type | ROUND, SLOTTED FRONT SHAFT |
| Shaft Type | ROUND REAR SHAFT |
| Flange Diameter | 0.9370 INCHES NOMINAL IN |
| Undercut Width | 0.0620 INCHES NOMINAL IN |
| Shaft Diameter | 0.0895 INCHES MINIMUM AND 0.0900 INCHES MAXIMUM SINGLE SHAFT IN |
| Rotor DC Resistance in Ohms | 410.00 NOMINAL |
| Undercut Diameter | 0.8350 INCHES MINIMUM AND 0.8400 INCHES MAXIMUM IN |
| Length | 0.0630 INCHES NOMINAL SHOULDER IN |
| Body Style | STANDARD ROUND C |
| Flange Thickness | 0.0620 INCHES NOMINAL IN |
| Stator Input Current Rating | 12.0 MILLIAMPERES NOMINAL |
| Alignment Hole Bolt Circle Diameter | 0.6780 INCHES NOMINAL IN |
| Phase Shift Angle in Deg | 11.000 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 1.2490 INCHES NOMINAL IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Zro Resistance in Ohms | 595.00 NOMINAL |
| Stator Input Electrical Power Rating | 50.0 MILLIWATTS NOMINAL |
| Plus J Zso Reactance in Ohms | 427.00 NOMINAL |
| Zrs Resistance in Ohms | 750.00 NOMINAL |
| Terminal Location | SIDE |
| Alignment Hole Quantity | 3 |
| Shaft Length | 0.4130 INCHES NOMINAL SINGLE SHAFT IN |
| Pilot Diameter | 0.5000 INCHES NOMINAL IN |
| Shoulder Diameter | 0.8118 INCHES MINIMUM AND 0.8123 INCHES MAXIMUM IN |
| Stator Input Voltage Rating in Volts | 11.8 NOMINAL |
| Alignment Hole Depth | 0.0500 INCHES MAXIMUM IN |
| Shaft Slot Width | 0.0320 INCHES NOMINAL SINGLE SHAFT IN |
| Plus J Zro Reactance in Ohms | 2130.00 NOMINAL |
| 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 |
|---|---|
| 111265-000 | 5/2 Secondary reference U.S. Government activity |
| 757-2-2613 | 3/2 Design control — primary reference U.S. Government activity |
| 757-2-2613 | 5/9 Secondary reference Numax Electronics Inc |
NSN 5990-00-686-4446 is a Synchro,control Transformer, classified under FSC 5990, Synchros and Resolvers. Status: active.
Key specifications for 5990-00-686-4446: Body Size: 10; Shaft Type: ROUND, SLOTTED FRONT SHAFT; Shaft Type: ROUND REAR SHAFT; Flange Diameter: 0.9370 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 5990-00-686-4446 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.