The Synchro,differential Transmitter, cataloged under National Stock Number 5990-00-503-4099, 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 16 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5990-00-503-4099 |
| Primary Part Number | 31TDX4A |
| Item Name | Synchro,differential Transmitter |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Body Size | 31 |
| Shaft Diameter | 0.2500 INCHES NOMINAL SINGLE SHAFT IN |
| Torque Gradient Per Angular Deg | 0.600 INCH-OUNCES NOMINAL IN |
| Stator Input Current Rating | 2.6 AMPERES NOMINAL |
| Shaft Thread Length | 0.3000 INCHES NOMINAL SINGLE SHAFT IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Stator Input Electrical Power Rating | 14.0 WATTS NOMINAL |
| Shaft Length | 0.8000 INCHES NOMINAL SINGLE SHAFT IN |
| Nondefinitive Spec/std Data | 31TDX4 TYPE |
| Shaft Nominal Thread Size | 0.250 INCHES SINGLE SHAFT IN |
| Stator Input Voltage Rating in Volts | 115.0 NOMINAL |
| Transformation Ratio | 1.154 ROTOR TO STATOR NOMINAL |
| Shaft Thread Direction | RIGHT-HAND SINGLE SHAFT |
| Shaft Thread Series Designator | UNF SINGLE SHAFT |
| Terminal Type and Quantity | 6 SCREW |
| Shaft Thread Class | 3A SINGLE SHAFT A |
| 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 |
|---|---|
| 31TDX4A | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| MILS16892TYPE31TDX4A | 4/1 Identification reference U.S. Government activity |
NSN 5990-00-503-4099 is a Synchro,differential Transmitter, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-00-503-4099 has 1 manufacturer part number on file: 31TDX4A (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 31TDX4A: Body Size: 31; Shaft Diameter: 0.2500 INCHES NOMINAL SINGLE SHAFT IN; Torque Gradient Per Angular Deg: 0.600 INCH-OUNCES NOMINAL IN; Stator Input Current Rating: 2.6 AMPERES NOMINAL. 16 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.