The Resolver,electrical, cataloged under National Stock Number 5990-00-067-9102, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Instruments and Flight Research, Inc.. Government technical data includes 25 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 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 | 5990-00-067-9102 |
| Primary Part Number | 506531 |
| Item Name | Resolver,electrical |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Instruments and Flight Research, Inc. |
| Status | ACTIVE |
| Body Size | 23 |
| Shaft Type | ROUND SINGLE SHAFT |
| Flange Diameter | 2.3130 INCHES NOMINAL IN |
| Undercut Width | 0.1250 INCHES NOMINAL IN |
| Shaft Diameter | 0.1245 INCHES NOMINAL SINGLE SHAFT IN |
| Undercut Diameter | 2.0620 INCHES NOMINAL IN |
| Body Style | STANDARD ROUND A |
| Flange Thickness | 0.1250 INCHES NOMINAL IN |
| Rotor Input Electrical Power Rating | 150.0 MILLIWATTS NOMINAL |
| Stator Input Current Rating | 550.0 MILLIAMPERES NOMINAL |
| Phase Shift Angle in Deg | 90.000 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 2.8910 INCHES NOMINAL IN |
| Frequency in Hertz | 60.0 NOMINAL |
| Stator Input Electrical Power Rating | 150.0 MILLIWATTS NOMINAL |
| Terminal Location | REAR |
| Rotor Input Voltage Rating in Volts | 25.0 NOMINAL |
| Shaft Length | 0.5000 INCHES NOMINAL SINGLE SHAFT IN |
| Pilot Diameter | 2.0620 INCHES NOMINAL IN |
| Stator Input Voltage Rating in Volts | 25.0 NOMINAL |
| Maximum Total Null Voltage Output in Millivolts Per Volt | 20.00 |
| Pilot Length | 0.1250 INCHES NOMINAL IN |
| Electrical Error Angular Range in Minutes | -20.0 TO 20.0 |
| Rotor Input Current Rating | 550.0 MILLIAMPERES NOMINAL |
| Material | STEEL CORROSION RESISTING BODY |
| Terminal Type and Quantity | 7 TAB, SOLDER LUG |
| 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 |
|---|---|
| 506531 PRIMARY | Instruments and Flight Research, Inc. (USA) |
NSN 5990-00-067-9102 is a Resolver,electrical, manufactured by Instruments and Flight Research, Inc., classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-00-067-9102 has 1 manufacturer part number on file: 506531 (Instruments and Flight Research, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4940-01-277-7663. Verify interchangeability with system specifications before substitution.
Key specifications for 506531: Body Size: 23; Shaft Type: ROUND SINGLE SHAFT; Flange Diameter: 2.3130 INCHES NOMINAL IN; Undercut Width: 0.1250 INCHES NOMINAL IN. 25 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.