The Synchro,transmitter, cataloged under National Stock Number 5990-00-471-9767, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is American Precision Industries, Inc Div Portescap Us. Government technical data includes 28 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-00-471-9767 |
| Primary Part Number | 8TX300B20 |
| Item Name | Synchro,transmitter |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | American Precision Industries, Inc Div Portescap Us |
| Status | ACTIVE |
| Body Size | 8 |
| Shaft Type | ROUND, SLOTTED SINGLE SHAFT |
| Flange Diameter | 0.7500 INCHES NOMINAL IN |
| Undercut Width | 0.0620 INCHES NOMINAL IN |
| Shaft Diameter | 0.1200 INCHES NOMINAL SINGLE SHAFT IN |
| Undercut Diameter | 0.6910 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | STANDARD ROUND A |
| Flange Thickness | 0.0620 INCHES NOMINAL IN |
| Rotor Input Electrical Power Rating | 1.25 WATTS MAXIMUM |
| Phase Shift Angle in Deg | 10.000 INPUT TO OUTPUT MAXIMUM |
| Mounting Surface to Terminal End Distance | 1.2410 INCHES NOMINAL IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Terminal Location | REAR |
| Rotor Input Voltage Rating in Volts | 26.0 NOMINAL |
| Shaft Length | 0.4800 INCHES NOMINAL SINGLE SHAFT IN |
| Body Material | STEEL CORROSION RESISTING |
| Pilot Diameter | 0.5000 INCHES NOMINAL IN |
| Maximum Fundamental Null Voltage in Millivolts Per Volt | 20.00 OUTPUT |
| Maximum Total Null Voltage Output in Millivolts Per Volt | 30.00 |
| Shaft Slot Width | 0.0200 INCHES NOMINAL SINGLE SHAFT IN |
| Transformation Ratio | 0.454 STATOR TO ROTOR NOMINAL |
| Pilot Length | 0.0430 INCHES NOMINAL IN |
| Actuator Friction Torque at Plus 25 Deg Celsius | 3.00 CENTIMETER-GRAMS MAXIMUM CM |
| Rotor Input Current Rating | 200.0 MILLIAMPERES MAXIMUM |
| Actuator Friction Torque at Minus 55 Deg Celsius | 9.00 CENTIMETER-GRAMS MAXIMUM CM |
| Terminal Type and Quantity | 1 WIRE LEAD |
| Shaft Slot Depth | 0.0250 INCHES NOMINAL SINGLE SHAFT IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 8TX300B20 | American Precision Industries, Inc Div Portescap Us (USA) |
| Reference | Meaning |
|---|---|
| 1918219-1 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
| 1918219-1 | 3/2 Design control — primary reference U.S. Government activity |
| 3563080-302 | 3/2 Design control — primary reference U.S. Government activity |
| AY080BC116A2 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
| 3563080-302 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
| AY080BC116A2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5990-00-471-9767 is a Synchro,transmitter, manufactured by American Precision Industries, Inc Div Portescap Us, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-00-471-9767 has 1 manufacturer part number on file: 8TX300B20 (American Precision Industries, Inc Div Portescap Us).
Key specifications for 8TX300B20: Body Size: 8; Shaft Type: ROUND, SLOTTED SINGLE SHAFT; Flange Diameter: 0.7500 INCHES NOMINAL IN; Undercut Width: 0.0620 INCHES NOMINAL IN. 28 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 5990-00-471-9767 has DEMIL Code B. 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.