The Synchro,transmitter, cataloged under National Stock Number 5990-00-997-8945, 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29 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5990-00-997-8945 |
| Item Name | Synchro,transmitter |
| 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 | 0.1195 INCHES MINIMUM AND 0.1200 INCHES MAXIMUM SINGLE SHAFT IN |
| Rotor DC Resistance in Ohms | 9.00 NOMINAL |
| Length | 0.0590 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM SHOULDER IN |
| Body Style | STANDARD ROUND B |
| Flange Thickness | 0.0900 INCHES MINIMUM AND 0.0960 INCHES MAXIMUM IN |
| Rotor Input Electrical Power Rating | 950.0 MILLIWATTS NOMINAL |
| Phase Shift Angle in Deg | 7.000 INPUT TO OUTPUT MINIMUM AND 10.000 INPUT TO OUTPUT MAXIMUM |
| Mounting Surface to Terminal End Distance | 1.7187 INCHES NOMINAL IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Zro Resistance in Ohms | 15.40 NOMINAL |
| Plus J Zso Reactance in Ohms | 17.20 NOMINAL |
| Terminal Location | REAR |
| Rotor Input Voltage Rating in Volts | 26.0 NOMINAL |
| Schematic Diagram Designator | 1 Y-ROTOR, 1 STATOR |
| Shaft Length | 0.5470 INCHES MINIMUM AND 0.5760 INCHES MAXIMUM SINGLE SHAFT IN |
| Pilot Diameter | 0.6245 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN |
| Maximum Fundamental Null Voltage in Millivolts Per Volt | 30.00 OUTPUT |
| Shoulder Diameter | 0.9995 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN |
| Maximum Total Null Voltage Output in Millivolts Per Volt | 50.00 |
| Plus J Zro Reactance in Ohms | 105.90 NOMINAL |
| Pilot Length | 0.0590 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN |
| Plus J Zss Reactance in Ohms | 1.30 NOMINAL |
| Zso Resistance in Ohms | 5.60 NOMINAL |
| Electrical Error Angular Range in Minutes | +5.0 TO 7.0 |
| Actuator Friction Torque at Plus 25 Deg Celsius | 4.0 CENTIMETER-GRAMS NOMINAL CM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 801208B | 3/2 Design control — primary reference U.S. Government activity |
| 5RS910-1E | 5/1 Secondary reference U.S. Government activity |
NSN 5990-00-997-8945 is a Synchro,transmitter, classified under FSC 5990, Synchros and Resolvers. Status: active.
Key specifications for 5990-00-997-8945: 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. 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 5990-00-997-8945 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.