The Synchro,control Transformer, cataloged under National Stock Number 5990-00-045-4705, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Raytheon Company Dba Raytheon Co. 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-00-045-4705 |
| Primary Part Number | AY503-38A6 |
| Item Name | Synchro,control Transformer |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Body Size | 10 |
| Shaft Type | ROUND, SLOTTED SINGLE SHAFT |
| Flange Diameter | 0.9370 INCHES NOMINAL IN |
| Undercut Width | 0.0620 INCHES NOMINAL IN |
| Shaft Diameter | 0.0900 INCHES NOMINAL SINGLE SHAFT IN |
| Rotor DC Resistance in Ohms | 410.00 NOMINAL |
| Undercut Diameter | 0.8370 INCHES NOMINAL IN |
| Length | 0.0630 INCHES NOMINAL SHOULDER IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | STANDARD ROUND C |
| Flange Thickness | 0.0620 INCHES NOMINAL IN |
| Stator Input Current Rating | 23.0 MILLIAMPERES NOMINAL |
| 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 |
| Stator Input Electrical Power Rating | 70.0 MILLIWATTS NOMINAL |
| Plus J Zso Reactance in Ohms | 427.00 NOMINAL |
| Zrs Resistance in Ohms | 750.00 NOMINAL |
| Shaft Length | 0.3750 INCHES NOMINAL SINGLE SHAFT IN |
| Pilot Diameter | 0.5000 INCHES NOMINAL IN |
| Shoulder Diameter | 0.8123 INCHES NOMINAL IN |
| Stator Input Voltage Rating in Volts | 10.0 NOMINAL |
| Shaft Slot Width | 0.0200 INCHES NOMINAL SINGLE SHAFT IN |
| Plus J Zro Reactance in Ohms | 2130.00 NOMINAL |
| Transformation Ratio | 11.800 STATOR TO ROTOR NOMINAL |
| Pilot Length | 0.0380 INCHES NOMINAL IN |
| Zso Resistance in Ohms | 126.00 NOMINAL |
| Actuator Friction Torque at Plus 25 Deg Celsius | 4.00 CENTIMETER-GRAMS NOMINAL CM |
| 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 |
|---|---|
| AY503-38A6 PRIMARY | Raytheon Company Dba Raytheon Co (USA) |
| 66340-2 | L3harris Interstate Electronics Corporation (USA) |
| Reference | Meaning |
|---|---|
| AY100AZ59A6 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
| 66340-2 | 5/2 Secondary reference U.S. Government activity |
| AY100AZ59A6 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| AY503-38A6 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
| 10CT300E28/20 | 5/9 Secondary reference Whitecraft Rattan Inc |
| AY503-38A6 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5990-00-045-4705 is a Synchro,control Transformer, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-00-045-4705 has 2 manufacturer part numbers on file: AY503-38A6 (Raytheon Company Dba Raytheon Co), 66340-2 (L3harris Interstate Electronics Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5315-01-352-2816. Verify interchangeability with system specifications before substitution.
Key specifications for AY503-38A6: Body Size: 10; Shaft Type: ROUND, SLOTTED SINGLE SHAFT; Flange Diameter: 0.9370 INCHES NOMINAL 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.