The Synchro,control Transformer, cataloged under National Stock Number 5990-00-252-1702, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-00-252-1702 |
| Item Name | Synchro,control Transformer |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Status | ACTIVE |
| Body Size | 8 |
| Shaft Type | ROUND, SLOTTED SINGLE SHAFT |
| Zrs Impedance Angle in Deg | 17.50 NOMINAL |
| Flange Diameter | 0.7500 INCHES NOMINAL IN |
| Undercut Width | 0.0620 INCHES NOMINAL IN |
| Shaft Diameter | 0.1195 INCHES MINIMUM AND 0.1200 INCHES MAXIMUM SINGLE SHAFT IN |
| Undercut Diameter | 0.6870 INCHES NOMINAL IN |
| Body Style | STANDARD ROUND A |
| Zrs Impedance Magnitude in Ohms | 126.00 NOMINAL |
| Flange Thickness | 0.0620 INCHES NOMINAL IN |
| Zro Impedance Angle in Deg | 75.00 NOMINAL |
| Phase Shift Angle in Deg | 13.000 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 1.2400 INCHES MAXIMUM IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Terminal Location | REAR |
| Zso Impedance Angle in Deg | 71.00 NOMINAL |
| Shaft Length | 0.4610 INCHES MINIMUM AND 0.4860 INCHES MAXIMUM SINGLE SHAFT IN |
| Pilot Diameter | 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Zso Impedance Magnitude in Ohms | 52.00 NOMINAL |
| Shaft Slot Width | 0.0250 INCHES NOMINAL SINGLE SHAFT IN |
| Transformation Ratio | 0.454 STATOR TO ROTOR NOMINAL |
| Pilot Length | 0.0400 INCHES NOMINAL IN |
| Actuator Friction Torque at Plus 25 Deg Celsius | 3.00 CENTIMETER-GRAMS NOMINAL CM |
| Actuator Friction Torque at Minus 55 Deg Celsius | 12.00 CENTIMETER-GRAMS NOMINAL CM |
| Terminal Type and Quantity | 5 WIRE LEAD |
| Shaft Slot Depth | 0.0300 INCHES NOMINAL SINGLE SHAFT IN |
| Zro Impedance Magnitude in Ohms | 269.00 NOMINAL |
| 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 |
|---|---|
| 530178-1 | 5/2 Secondary reference U.S. Government activity |
| CM41014057 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5990-00-252-1702 is a Synchro,control Transformer, classified under FSC 5990, Synchros and Resolvers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5935-01-272-1261. Verify interchangeability with system specifications before substitution.
Key specifications for 5990-00-252-1702: Body Size: 8; Shaft Type: ROUND, SLOTTED SINGLE SHAFT; Zrs Impedance Angle in Deg: 17.50 NOMINAL; Flange Diameter: 0.7500 INCHES NOMINAL IN. 27 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.