The Synchro,control Transformer, cataloged under National Stock Number 5990-00-556-9673, 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 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-00-556-9673 |
| Primary Part Number | 524057 |
| Item Name | Synchro,control Transformer |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Body Size | 37 |
| Flange Diameter | 3.6230 INCHES MINIMUM AND 3.6250 INCHES MAXIMUM IN |
| Shaft Diameter | 0.2498 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM SINGLE SHAFT IN |
| Distance Between Flanges | 1.8070 INCHES MINIMUM AND 1.8170 INCHES MAXIMUM IN |
| Length | 1.0310 INCHES NOMINAL SHOULDER IN |
| Body Style | STANDARD ROUND DOUBLE FLANGE B |
| Flange Thickness | 0.2490 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN |
| Shaft Maximum Runout | 0.0020 INCHES IN |
| Stator Input Current Rating | 35.0 MILLIAMPERES NOMINAL |
| Frequency in Hertz | 60.0 NOMINAL |
| Stator Input Electrical Power Rating | 700.0 MILLIWATTS NOMINAL |
| Terminal Location | REAR |
| Shaft Maximum Radial Play | 0.0005 INCHES IN |
| Shaft Length | 0.7970 INCHES NOMINAL SINGLE SHAFT IN |
| Pilot Diameter | 1.3120 INCHES NOMINAL IN |
| Shoulder Diameter | 3.3650 INCHES MINIMUM AND 3.3750 INCHES MAXIMUM IN |
| Shaft Nominal Thread Size | 0.250 INCHES SINGLE SHAFT IN |
| Stator Input Voltage Rating in Volts | 115.0 NOMINAL |
| Transformation Ratio | 0.735 ROTOR TO STATOR NOMINAL |
| Shaft Thread Direction | RIGHT-HAND SINGLE SHAFT |
| Shaft Thread Series Designator | UNF SINGLE SHAFT |
| Terminal Type and Quantity | 6 TAB, SOLDER LUG |
| 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 |
|---|---|
| 351223 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 524057 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| MILS2335TYPE5SCTMK13M0D2B | 4/1 Identification reference U.S. Government activity |
NSN 5990-00-556-9673 is a Synchro,control Transformer, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-00-556-9673 has 2 manufacturer part numbers on file: 351223 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 524057 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 524057: Body Size: 37; Flange Diameter: 3.6230 INCHES MINIMUM AND 3.6250 INCHES MAXIMUM IN; Shaft Diameter: 0.2498 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM SINGLE SHAFT IN; Distance Between Flanges: 1.8070 INCHES MINIMUM AND 1.8170 INCHES MAXIMUM IN. 22 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.