The Synchro,transmitter, cataloged under National Stock Number 5990-00-686-4243, 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29 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5990-00-686-4243 |
| Item Name | Synchro,transmitter |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Status | ACTIVE |
| Body Size | 10 |
| Shaft Type | ROUND, SLOTTED BOTH SHAFTS |
| Flange Diameter | 0.9360 INCHES MINIMUM AND 0.9370 INCHES MAXIMUM IN |
| Undercut Width | 0.0620 INCHES NOMINAL IN |
| Shaft Diameter | 0.0895 INCHES MINIMUM AND 0.0900 INCHES MAXIMUM BOTH SHAFTS IN |
| Rotor DC Resistance in Ohms | 409.00 NOMINAL |
| Undercut Diameter | 0.8350 INCHES MINIMUM AND 0.8400 INCHES MAXIMUM IN |
| Length | 0.0630 INCHES NOMINAL SHOULDER IN |
| Body Style | STANDARD ROUND C |
| Flange Thickness | 0.0620 INCHES NOMINAL IN |
| Rotor Input Electrical Power Rating | 100.0 MILLIWATTS NOMINAL |
| Alignment Hole Bolt Circle Diameter | 0.6780 INCHES NOMINAL IN |
| Phase Shift Angle in Deg | 11.000 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 1.2410 INCHES NOMINAL IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Zro Resistance in Ohms | 595.00 NOMINAL |
| Plus J Zso Reactance in Ohms | 427.00 NOMINAL |
| Terminal Location | REAR |
| Rotor Input Voltage Rating in Volts | 26.0 NOMINAL |
| Alignment Hole Quantity | 3 |
| Shaft Length | 0.3750 INCHES NOMINAL REAR SHAFT IN |
| Shaft Length | 0.4760 INCHES NOMINAL FRONT SHAFT IN |
| Body Material | STEEL CORROSION RESISTING |
| Pilot Diameter | 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.8118 INCHES MINIMUM AND 0.8123 INCHES MAXIMUM IN |
| Alignment Hole Depth | 0.0620 INCHES NOMINAL IN |
| Shaft Slot Width | 0.0470 INCHES NOMINAL BOTH SHAFTS IN |
| Plus J Zro Reactance in Ohms | 2130.00 NOMINAL |
| Pilot Length | 0.0380 INCHES NOMINAL 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 |
|---|---|
| 210-2235 | 5/9 Secondary reference U.S. Government activity |
| 971-1227 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5990-00-686-4243 is a Synchro,transmitter, classified under FSC 5990, Synchros and Resolvers. Status: active.
Key specifications for 5990-00-686-4243: Body Size: 10; Shaft Type: ROUND, SLOTTED BOTH SHAFTS; Flange Diameter: 0.9360 INCHES MINIMUM AND 0.9370 INCHES MAXIMUM IN; Undercut Width: 0.0620 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.
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.