The Synchro,receiver, cataloged under National Stock Number 5990-00-682-9897, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-00-682-9897 |
| Primary Part Number | 1819904 |
| Item Name | Synchro,receiver |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Body Size | 10 |
| Shaft Type | ROUND, SLOTTED SINGLE SHAFT |
| Flange Diameter | 0.9360 INCHES MINIMUM AND 0.9370 INCHES MAXIMUM IN |
| Undercut Width | 0.0620 INCHES NOMINAL IN |
| Shaft Diameter | 0.2405 INCHES NOMINAL SINGLE SHAFT IN |
| Rotor DC Resistance in Ohms | 16.60 NOMINAL |
| Undercut Diameter | 0.8370 INCHES MINIMUM AND 0.8400 INCHES MAXIMUM IN |
| Length | 0.0620 INCHES NOMINAL SHOULDER IN |
| Body Style | STANDARD ROUND C |
| Flange Thickness | 0.0620 INCHES NOMINAL IN |
| Rotor Input Electrical Power Rating | 660.0 MILLIWATTS NOMINAL |
| Alignment Hole Bolt Circle Diameter | 0.5000 INCHES NOMINAL IN |
| Shaft Thread Length | 0.3100 INCHES NOMINAL SINGLE SHAFT IN |
| Phase Shift Angle in Deg | 5.000 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 1.2410 INCHES MAXIMUM IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Zro Resistance in Ohms | 32.00 NOMINAL |
| Plus J Zso Reactance in Ohms | 31.00 NOMINAL |
| Zrs Resistance in Ohms | 47.00 NOMINAL |
| Terminal Location | REAR |
| Rotor Input Voltage Rating in Volts | 26.0 NOMINAL |
| Alignment Hole Quantity | 3 |
| Shaft Length | 0.7000 INCHES NOMINAL SINGLE SHAFT IN |
| Body Material | ALUMINUM ALLOY |
| Pilot Diameter | 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.8118 INCHES MINIMUM AND 0.8123 INCHES MAXIMUM IN |
| Maximum Total Null Voltage Output in Millivolts Per Volt | 30.00 |
| Alignment Hole Depth | 0.0500 INCHES NOMINAL IN |
| Shaft Slot Width | 0.0150 INCHES MINIMUM AND 0.0200 INCHES MAXIMUM 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 |
| Part Number | Manufacturer |
|---|---|
| 1819904 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 739-900-004 | Raytheon Company (USA) |
NSN 5990-00-682-9897 is a Synchro,receiver, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-00-682-9897 has 2 manufacturer part numbers on file: 1819904 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 739-900-004 (Raytheon Company).
Key specifications for 1819904: Body Size: 10; Shaft Type: ROUND, SLOTTED SINGLE SHAFT; 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.