The Synchro,control Transformer, cataloged under National Stock Number 5990-01-081-3845, 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29 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-01-081-3845 |
| Item Name | Synchro,control Transformer |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Status | ACTIVE |
| Body Size | 15 |
| Shaft Type | SPLINE W/THREADS SINGLE SHAFT |
| Flange Diameter | 1.4370 INCHES NOMINAL IN |
| Undercut Width | 0.0780 INCHES NOMINAL IN |
| Shaft Diameter | 0.1900 INCHES NOMINAL SINGLE SHAFT IN |
| Rotor DC Resistance in Ohms | 600.00 NOMINAL |
| Length | 0.1320 INCHES NOMINAL SHOULDER IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | STANDARD ROUND B |
| Flange Thickness | 0.0930 INCHES NOMINAL IN |
| Stator Input Current Rating | 10.0 MILLIAMPERES NOMINAL |
| Spline Tooth Quantity | 21 SINGLE SHAFT |
| Shaft Thread Length | 0.2920 INCHES NOMINAL SINGLE SHAFT IN |
| Phase Shift Angle in Deg | 5.500 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 1.6400 INCHES NOMINAL IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Zro Resistance in Ohms | 880.00 NOMINAL |
| Stator Input Electrical Power Rating | 140.0 MILLIWATTS NOMINAL |
| Plus J Zso Reactance in Ohms | 9512.00 NOMINAL |
| Zrs Resistance in Ohms | 1050.00 NOMINAL |
| Terminal Location | REAR |
| Shaft Length | 0.5840 INCHES NOMINAL SINGLE SHAFT IN |
| Pilot Diameter | 0.8750 INCHES NOMINAL IN |
| Spline Tooth Diametral Pitch | 120 SINGLE SHAFT |
| Maximum Fundamental Null Voltage in Millivolts Per Volt | 60.00 INPUT |
| Shoulder Diameter | 1.3120 INCHES NOMINAL IN |
| Shaft Nominal Thread Size | 0.190 INCHES SINGLE SHAFT IN |
| Stator Input Voltage Rating in Volts | 90.0 NOMINAL |
| Maximum Total Null Voltage Output in Millivolts Per Volt | 32.00 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 15CT4B | 3/2 Design control — primary reference U.S. Government activity |
NSN 5990-01-081-3845 is a Synchro,control Transformer, classified under FSC 5990, Synchros and Resolvers. Status: active.
Key specifications for 5990-01-081-3845: Body Size: 15; Shaft Type: SPLINE W/THREADS SINGLE SHAFT; Flange Diameter: 1.4370 INCHES NOMINAL IN; Undercut Width: 0.0780 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.