The Synchro,control Transformer, cataloged under National Stock Number 5990-00-021-5061, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-00-021-5061 |
| Primary Part Number | 142739-01 |
| 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 | 0.7470 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN |
| Undercut Width | 0.0570 INCHES NOMINAL IN |
| Shaft Diameter | 0.0895 INCHES MINIMUM AND 0.0900 INCHES MAXIMUM SINGLE SHAFT IN |
| Rotor DC Resistance in Ohms | 328.50 MINIMUM AND 401.50 MAXIMUM |
| Undercut Diameter | 0.6910 INCHES NOMINAL IN |
| Body Style | STANDARD ROUND A |
| Flange Thickness | 0.0620 INCHES NOMINAL IN |
| Stator Input Current Rating | 43.0 MILLIAMPERES NOMINAL |
| Phase Shift Angle in Deg | 10.500 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 1.2410 INCHES NOMINAL IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Zro Resistance in Ohms | 340.00 MINIMUM AND 460.00 MAXIMUM |
| Stator Input Electrical Power Rating | 120.0 MILLIWATTS NOMINAL |
| Plus J Zso Reactance in Ohms | 216.00 MINIMUM AND 292.00 MAXIMUM |
| Zrs Resistance in Ohms | 692.00 MINIMUM |
| Terminal Location | REAR |
| Shaft Length | 0.3170 INCHES MINIMUM AND 0.3470 INCHES MAXIMUM SINGLE SHAFT IN |
| Pilot Diameter | 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Maximum Fundamental Null Voltage in Millivolts Per Volt | 30.00 OUTPUT |
| Stator Input Voltage Rating in Volts | 11.7 MINIMUM AND 11.9 MAXIMUM |
| Maximum Total Null Voltage Output in Millivolts Per Volt | 10.50 |
| Shaft Slot Width | 0.0200 INCHES NOMINAL SINGLE SHAFT IN |
| Plus J Zro Reactance in Ohms | 1207.00 MINIMUM AND 1633.00 MAXIMUM |
| Transformation Ratio | 127.500 ROTOR TO STATOR MINIMUM AND 172.500 ROTOR TO STATOR MAXIMUM |
| Pilot Length | 0.0400 INCHES NOMINAL IN |
| Zso Resistance in Ohms | 51.00 MINIMUM AND 69.00 MAXIMUM |
| Electrical Error Angular Range in Minutes | -5.0 TO 5.0 |
| 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 |
|---|---|
| 142739-01 PRIMARY | Ge Aviation Systems Llc (USA) |
NSN 5990-00-021-5061 is a Synchro,control Transformer, manufactured by Ge Aviation Systems Llc, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-00-021-5061 has 1 manufacturer part number on file: 142739-01 (Ge Aviation Systems Llc).
Key specifications for 142739-01: Body Size: 8; Shaft Type: ROUND, SLOTTED SINGLE SHAFT; Flange Diameter: 0.7470 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN; Undercut Width: 0.0570 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.