The Synchro,differential Transmitter, cataloged under National Stock Number 5990-01-084-8330, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is General Dynamics Motion Control Llc. 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 | 5990-01-084-8330 |
| Primary Part Number | VTDX31-6N1 |
| Item Name | Synchro,differential Transmitter |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | General Dynamics Motion Control Llc |
| Status | ACTIVE |
| Body Size | 31 |
| Shaft Type | SPLINE W/THREADS SINGLE SHAFT |
| Zrs Impedance Angle in Deg | 27.00 MINIMUM |
| Body Diameter | 2.7000 INCHES MAXIMUM IN |
| Flange Diameter | 3.0990 INCHES MINIMUM AND 3.1000 INCHES MAXIMUM IN |
| Shaft Diameter | 0.2403 INCHES MINIMUM AND 0.2405 INCHES MAXIMUM SINGLE SHAFT IN |
| Rotor DC Resistance in Ohms | 24.00 MAXIMUM |
| Length | 0.6150 INCHES NOMINAL SHOULDER IN |
| Body Style | STANDARD ROUND D |
| Flange Thickness | 0.2500 INCHES NOMINAL IN |
| Torque Gradient Per Angular Deg | 0.300 INCH-OUNCES MINIMUM IN |
| Stator Input Current Rating | 725.0 MILLIAMPERES MAXIMUM |
| Spline Tooth Quantity | 22 SINGLE SHAFT |
| Shaft Thread Length | 0.3640 INCHES NOMINAL SINGLE SHAFT IN |
| Aft of First Flange Diameter | 2.7490 INCHES MINIMUM AND 2.7500 INCHES MAXIMUM IN |
| Phase Shift Angle in Deg | 6.500 INPUT TO OUTPUT MAXIMUM |
| Mounting Surface to Terminal End Distance | 4.4063 INCHES NOMINAL IN |
| Frequency in Hertz | 60.0 NOMINAL |
| Stator Input Electrical Power Rating | 7.7 WATTS MAXIMUM |
| Zrs Resistance in Ohms | 44.00 MAXIMUM |
| Terminal Location | REAR |
| Shaft Length | 0.6900 INCHES MINIMUM AND 0.7100 INCHES MAXIMUM SINGLE SHAFT IN |
| Body Material | STEEL CORROSION RESISTING |
| Pilot Diameter | 0.2970 INCHES NOMINAL IN |
| Spline Tooth Diametral Pitch | 96 SINGLE SHAFT |
| Second Shoulder Length | 0.3750 INCHES NOMINAL IN |
| Shoulder Diameter | 2.6950 INCHES MINIMUM AND 2.7000 INCHES MAXIMUM IN |
| Shaft Nominal Thread Size | 0.250 INCHES SINGLE SHAFT IN |
| Stator Input Voltage Rating in Volts | 90.0 NOMINAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 555444 | Ainslie Corporation (USA) |
| VTDX31-6N1 PRIMARY | General Dynamics Motion Control Llc (USA) |
NSN 5990-01-084-8330 is a Synchro,differential Transmitter, manufactured by General Dynamics Motion Control Llc, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-01-084-8330 has 2 manufacturer part numbers on file: 555444 (Ainslie Corporation), VTDX31-6N1 (General Dynamics Motion Control Llc).
Key specifications for VTDX31-6N1: Body Size: 31; Shaft Type: SPLINE W/THREADS SINGLE SHAFT; Zrs Impedance Angle in Deg: 27.00 MINIMUM; Body Diameter: 2.7000 INCHES MAXIMUM 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 5990-01-084-8330 has DEMIL Code D. 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.