The Synchro,control Transformer, cataloged under National Stock Number 5990-01-148-3091, 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 24 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-01-148-3091 |
| Primary Part Number | VCT11-4M55 |
| Item Name | Synchro,control Transformer |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | General Dynamics Motion Control Llc |
| Status | ACTIVE |
| Body Size | 11 |
| Shaft Type | SPLINE W/THREADS SINGLE SHAFT |
| Flange Diameter | 1.0620 INCHES NOMINAL IN |
| Undercut Width | 0.0620 INCHES NOMINAL IN |
| Shaft Diameter | 0.1872 INCHES NOMINAL SINGLE SHAFT IN |
| Length | 0.0690 INCHES NOMINAL SHOULDER IN |
| Body Style | STANDARD ROUND B |
| Flange Thickness | 0.0930 INCHES NOMINAL IN |
| Spline Tooth Quantity | 21 SINGLE SHAFT |
| Shaft Thread Length | 0.2600 INCHES NOMINAL SINGLE SHAFT IN |
| Mounting Surface to Terminal End Distance | 2.2870 INCHES MAXIMUM IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Terminal Location | REAR |
| Shaft Length | 0.5550 INCHES NOMINAL SINGLE SHAFT IN |
| Pilot Diameter | 0.6250 INCHES NOMINAL IN |
| Spline Tooth Diametral Pitch | 120 SINGLE SHAFT |
| Shoulder Diameter | 1.0000 INCHES NOMINAL IN |
| Shaft Nominal Thread Size | 0.112 INCHES SINGLE SHAFT IN |
| Shaft Thread Direction | RIGHT-HAND SINGLE SHAFT |
| Pilot Length | 0.0620 INCHES NOMINAL IN |
| Shaft Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE SHAFT |
| Material | STEEL CORROSION RESISTING BODY |
| Terminal Type and Quantity | 5 SCREW |
| Shaft Thread Class | 2B SINGLE SHAFT |
| 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 |
|---|---|
| VCT11-4M55 PRIMARY | General Dynamics Motion Control Llc (USA) |
NSN 5990-01-148-3091 is a Synchro,control Transformer, manufactured by General Dynamics Motion Control Llc, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-01-148-3091 has 1 manufacturer part number on file: VCT11-4M55 (General Dynamics Motion Control Llc).
Key specifications for VCT11-4M55: Body Size: 11; Shaft Type: SPLINE W/THREADS SINGLE SHAFT; Flange Diameter: 1.0620 INCHES NOMINAL IN; Undercut Width: 0.0620 INCHES NOMINAL IN. 24 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.