The Synchro,control Transformer, cataloged under National Stock Number 5990-00-855-1056, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Aimtron Systems, Llc. Government technical data includes 29 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5990-00-855-1056 |
| Primary Part Number | 401109 |
| Item Name | Synchro,control Transformer |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Aimtron Systems, Llc |
| Status | ACTIVE |
| Body Size | 8 |
| Shaft Type | SPLINE W/THREADS SINGLE SHAFT |
| Zrs Impedance Angle in Deg | 16.00 MINIMUM AND 20.00 MAXIMUM |
| Flange Diameter | 0.7500 INCHES MAXIMUM IN |
| Undercut Width | 0.0620 INCHES NOMINAL IN |
| Shaft Diameter | 0.1247 INCHES NOMINAL SINGLE SHAFT IN |
| Undercut Diameter | 0.6870 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | STANDARD ROUND A |
| Zrs Impedance Magnitude in Ohms | 830.00 MINIMUM AND 940.00 MAXIMUM |
| Flange Thickness | 0.0620 INCHES NOMINAL IN |
| Stator Input Current Rating | 23.0 MILLIAMPERES MAXIMUM |
| Spline Tooth Quantity | 13 SINGLE SHAFT |
| Shaft Thread Length | 0.1900 INCHES MINIMUM SINGLE SHAFT IN |
| Phase Shift Angle in Deg | 8.000 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 1.2400 INCHES MAXIMUM IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Stator Input Electrical Power Rating | 44.0 MILLIWATTS NOMINAL |
| Terminal Location | REAR |
| Shaft Maximum Radial Play | 0.0004 INCHES IN |
| Schematic Diagram Designator | 1 Y-ROTOR, 1 STATOR |
| Zso Impedance Angle in Deg | 76.00 MINIMUM AND 81.00 MAXIMUM |
| Shaft Length | 0.4810 INCHES NOMINAL SINGLE SHAFT IN |
| Pilot Diameter | 0.5000 INCHES MAXIMUM IN |
| Spline Tooth Diametral Pitch | 120 SINGLE SHAFT |
| Zso Impedance Magnitude in Ohms | 444.00 MINIMUM AND 570.00 MAXIMUM |
| Maximum Fundamental Null Voltage in Millivolts Per Volt | 25.00 INPUT |
| Shaft Nominal Thread Size | 0.120 INCHES SINGLE SHAFT IN |
| Stator Input Voltage Rating in Volts | 11.8 NOMINAL |
| 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 |
|---|---|
| 401109 PRIMARY | Aimtron Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 401109 | 5/9 Secondary reference Cardion Inc |
NSN 5990-00-855-1056 is a Synchro,control Transformer, manufactured by Aimtron Systems, Llc, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-00-855-1056 has 1 manufacturer part number on file: 401109 (Aimtron Systems, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5815-01-033-9272. Verify interchangeability with system specifications before substitution.
Key specifications for 401109: Body Size: 8; Shaft Type: SPLINE W/THREADS SINGLE SHAFT; Zrs Impedance Angle in Deg: 16.00 MINIMUM AND 20.00 MAXIMUM; Flange Diameter: 0.7500 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.
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.