The Synchro,transmitter, cataloged under National Stock Number 5990-00-686-4631, 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29 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-00-686-4631 |
| Item Name | Synchro,transmitter |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Status | ACTIVE |
| Body Size | 11 |
| Shaft Type | ROUND, TAPERED, THREADED, UNDERCUT SINGLE SHAFT |
| Flange Diameter | 1.0590 INCHES MINIMUM AND 1.0620 INCHES MAXIMUM IN |
| Undercut Width | 0.0500 INCHES NOMINAL IN |
| Shaft Diameter | 0.0800 INCHES MINIMUM AND 0.0810 INCHES MAXIMUM SINGLE SHAFT IN |
| Undercut Diameter | 0.9750 INCHES NOMINAL IN |
| Shaft Tapered End Minor Diameter | 0.0600 INCHES NOMINAL SINGLE SHAFT IN |
| Length | 0.0620 INCHES NOMINAL SHOULDER IN |
| Body Style | STANDARD ROUND C |
| Flange Thickness | 0.0930 INCHES NOMINAL IN |
| Torque Gradient Per Angular Deg | 2000.000 MILLIMETER-MILLIGRAMS NOMINAL MM |
| Rotor Input Electrical Power Rating | 600.0 MILLIWATTS NOMINAL |
| Shaft Tip Length | 0.0630 INCHES NOMINAL SINGLE SHAFT IN |
| Mounting Surface to Terminal End Distance | 1.6200 INCHES NOMINAL IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Shaft Undercut Width | 0.0300 INCHES NOMINAL SINGLE SHAFT IN |
| Terminal Location | REAR |
| Rotor Input Voltage Rating in Volts | 26.0 NOMINAL |
| Shaft Length | 0.3130 INCHES NOMINAL SINGLE SHAFT IN |
| Body Material | ALUMINUM |
| Pilot Diameter | 0.6245 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN |
| Shaft Undercut Diameter | 0.0450 INCHES NOMINAL SINGLE SHAFT IN |
| Shoulder Diameter | 0.9995 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN |
| Shaft Nominal Thread Size | 0.0600 INCHES SINGLE SHAFT IN |
| Shaft Taper Length | 0.1160 INCHES NOMINAL SINGLE SHAFT IN |
| Transformation Ratio | 0.454 STATOR TO ROTOR NOMINAL |
| Shaft Thread Direction | RIGHT-HAND SINGLE SHAFT |
| Pilot Length | 0.0620 INCHES NOMINAL IN |
| Shaft Thread Series Designator | UNF SINGLE SHAFT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| AY1106-15A | 3/2 Design control — primary reference U.S. Government activity |
| AY1106-15A | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems |
| AY1106-15A | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
NSN 5990-00-686-4631 is a Synchro,transmitter, classified under FSC 5990, Synchros and Resolvers. Status: active.
Key specifications for 5990-00-686-4631: Body Size: 11; Shaft Type: ROUND, TAPERED, THREADED, UNDERCUT SINGLE SHAFT; Flange Diameter: 1.0590 INCHES MINIMUM AND 1.0620 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 5990-00-686-4631 has DEMIL Code B. 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.