The Synchro,control Transformer, cataloged under National Stock Number 5990-00-855-9451, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5990-00-855-9451 |
| Item Name | Synchro,control Transformer |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Status | ACTIVE |
| Body Size | 11 |
| Shaft Type | ROUND, SLOTTED SINGLE SHAFT |
| Flange Diameter | 1.0570 INCHES MINIMUM AND 1.0650 INCHES MAXIMUM IN |
| Undercut Width | 0.0500 INCHES NOMINAL IN |
| Shaft Diameter | 0.1200 INCHES NOMINAL SINGLE SHAFT IN |
| Undercut Diameter | 0.9750 INCHES NOMINAL IN |
| Length | 0.0620 INCHES NOMINAL SHOULDER IN |
| Body Style | STANDARD ROUND C |
| Flange Thickness | 0.0930 INCHES NOMINAL IN |
| Stator Input Current Rating | 10.0 MILLIAMPERES NOMINAL |
| Mounting Surface to Terminal End Distance | 1.7650 INCHES NOMINAL IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Stator Input Electrical Power Rating | 250.0 MILLIWATTS NOMINAL |
| Terminal Location | REAR |
| Shaft Length | 0.5630 INCHES NOMINAL SINGLE SHAFT IN |
| Pilot Diameter | 0.6245 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.9995 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN |
| Stator Input Voltage Rating in Volts | 11.8 NOMINAL |
| Shaft Slot Width | 0.0310 INCHES NOMINAL SINGLE SHAFT IN |
| Transformation Ratio | 2.203 ROTOR TO STATOR NOMINAL |
| Pilot Length | 0.0620 INCHES NOMINAL IN |
| Electrical Error Angular Range in Minutes | -10.0 TO 10.0 |
| Material | STEEL CORROSION RESISTING BODY |
| Terminal Type and Quantity | 5 SOLDER STUD |
| Shaft Slot Depth | 0.0310 INCHES NOMINAL SINGLE SHAFT IN |
| 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 |
|---|---|
| RS900-1E | 3/2 Design control — primary reference U.S. Government activity |
NSN 5990-00-855-9451 is a Synchro,control Transformer, classified under FSC 5990, Synchros and Resolvers. Status: active.
Key specifications for 5990-00-855-9451: Body Size: 11; Shaft Type: ROUND, SLOTTED SINGLE SHAFT; Flange Diameter: 1.0570 INCHES MINIMUM AND 1.0650 INCHES MAXIMUM IN; Undercut Width: 0.0500 INCHES NOMINAL IN. 25 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.