The Synchro,transmitter, cataloged under National Stock Number 5990-00-810-9557, 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29 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5990-00-810-9557 |
| Item Name | Synchro,transmitter |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Status | ACTIVE |
| Body Size | 11 |
| Shaft Type | ROUND, SLOTTED FRONT SHAFT |
| Zrs Impedance Angle in Deg | 25.80 NOMINAL |
| Zso-90 Resistance in Ohms | 113.00 NOMINAL |
| Flange Diameter | 1.0570 INCHES MINIMUM AND 1.0650 INCHES MAXIMUM IN |
| Undercut Width | 0.0450 INCHES MINIMUM AND 0.0550 INCHES MAXIMUM IN |
| Shaft Diameter | 0.1195 INCHES MINIMUM AND 0.1200 INCHES MAXIMUM FRONT SHAFT IN |
| Rotor DC Resistance in Ohms | 135.15 MINIMUM AND 182.85 MAXIMUM |
| Undercut Diameter | 0.9700 INCHES MINIMUM AND 0.9800 INCHES MAXIMUM IN |
| Length | 0.0590 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM SHOULDER IN |
| Body Style | STANDARD ROUND C |
| Zrs Impedance Magnitude in Ohms | 395.00 NOMINAL |
| Flange Thickness | 0.0900 INCHES MINIMUM AND 0.0960 INCHES MAXIMUM IN |
| Plus J Zso-90 Reactance in Ohms | 335.00 NOMINAL |
| Rotor Input Electrical Power Rating | 880.0 MILLIWATTS NOMINAL |
| Zro Impedance Angle in Deg | 82.30 NOMINAL |
| Phase Shift Angle in Deg | 4.000 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 1.7650 INCHES NOMINAL IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Zro Resistance in Ohms | 295.00 NOMINAL |
| Plus J Zso Reactance in Ohms | 1120.00 NOMINAL |
| Zrs Resistance in Ohms | 356.00 NOMINAL |
| Terminal Location | REAR |
| Rotor Input Voltage Rating in Volts | 115.0 NOMINAL |
| Zso-90 Impedance Angle in Deg | 71.30 NOMINAL |
| Zso Impedance Angle in Deg | 81.30 NOMINAL |
| Shaft Length | 0.4600 INCHES MINIMUM AND 0.5640 INCHES MAXIMUM FRONT SHAFT IN |
| Pilot Diameter | 0.6245 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN |
| Zso Impedance Magnitude in Ohms | 1130.00 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 |
|---|---|
| 96C814-001 | 5/9 Secondary reference Ail Systems Inc Sub of Eaton Corp |
| RS911-2H | 3/2 Design control — primary reference U.S. Government activity |
NSN 5990-00-810-9557 is a Synchro,transmitter, classified under FSC 5990, Synchros and Resolvers. Status: active.
Key specifications for 5990-00-810-9557: Body Size: 11; Shaft Type: ROUND, SLOTTED FRONT SHAFT; Zrs Impedance Angle in Deg: 25.80 NOMINAL; Zso-90 Resistance in Ohms: 113.00 NOMINAL. 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.