The Synchro,control Transformer, cataloged under National Stock Number 5990-00-677-6486, 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29 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-00-677-6486 |
| Item Name | Synchro,control Transformer |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Status | ACTIVE |
| Body Size | 20 |
| Shaft Type | SPLINE W/THREADS SINGLE SHAFT |
| Shaft Radial Play Test Point | 0.125 INCHES MAXIMUM IN |
| Body Diameter | 1.9000 INCHES NOMINAL IN |
| Flange Diameter | 1.7490 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN |
| Undercut Width | 0.0780 INCHES NOMINAL IN |
| Shaft Diameter | 0.1870 INCHES MINIMUM AND 0.1872 INCHES MAXIMUM SINGLE SHAFT IN |
| Length | 0.1290 INCHES MINIMUM AND 0.1350 INCHES MAXIMUM SHOULDER IN |
| Body Style | STANDARD ROUND, ROTATABLE STATOR B |
| Shaft Radial Play Determining Weight | 16.0 OUNCES OZ |
| Flange Thickness | 0.0900 INCHES MINIMUM AND 0.0960 INCHES MAXIMUM IN |
| Shaft Maximum Runout | 0.0008 INCHES IN |
| Stator Input Current Rating | 7.0 MILLIAMPERES NOMINAL |
| Spline Tooth Quantity | 21 SINGLE SHAFT |
| Phase Shift Angle in Deg | 3.000 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 3.3300 INCHES MAXIMUM IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Stator Input Electrical Power Rating | 250.0 MILLIWATTS NOMINAL |
| Terminal Location | REAR |
| Shaft End Play Determining Weight | 16.0 OUNCES OZ |
| Shaft Maximum Radial Play | 0.0006 INCHES IN |
| Shaft Length | 0.5450 INCHES MINIMUM AND 0.5650 INCHES MAXIMUM SINGLE SHAFT IN |
| Pilot Diameter | 0.9375 INCHES MAXIMUM IN |
| Spline Tooth Diametral Pitch | 120 SINGLE SHAFT |
| Maximum Fundamental Null Voltage in Millivolts Per Volt | 35.00 OUTPUT |
| Shoulder Diameter | 1.5615 INCHES MINIMUM AND 1.5620 INCHES MAXIMUM IN |
| Shaft Nominal Thread Size | 0.1900 INCHES SINGLE SHAFT IN |
| Stator Input Voltage Rating in Volts | 90.0 NOMINAL |
| Maximum Total Null Voltage Output in Millivolts Per Volt | 65.00 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MILS20708-39 | 4/1 Identification reference U.S. Government activity |
| 19CT4B | 2/2 Government specification standardization U.S. Government activity |
NSN 5990-00-677-6486 is a Synchro,control Transformer, classified under FSC 5990, Synchros and Resolvers. Status: active.
Key specifications for 5990-00-677-6486: Body Size: 20; Shaft Type: SPLINE W/THREADS SINGLE SHAFT; Shaft Radial Play Test Point: 0.125 INCHES MAXIMUM IN; Body Diameter: 1.9000 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 5990-00-677-6486 has DEMIL Code D. 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.