The Resolver,electrical, cataloged under National Stock Number 5990-01-221-0609, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Kearfott Corp Div Kearfott Corporation. Government technical data includes 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-01-221-0609 |
| Primary Part Number | CT90948006 |
| Item Name | Resolver,electrical |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Kearfott Corp Div Kearfott Corporation |
| Status | ACTIVE |
| Body Diameter | 1.4400 INCHES NOMINAL IN |
| Flange Diameter | 1.4400 INCHES NOMINAL IN |
| Length | 0.0400 INCHES NOMINAL SHOULDER IN |
| Body Style | STANDARD ROUND, ROTATABLE HOUSING |
| Flange Thickness | 0.0930 INCHES NOMINAL IN |
| Spline Tooth Quantity | 21 SINGLE SHAFT |
| Phase Shift Angle in Deg | 0.000 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 1.9070 INCHES NOMINAL IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Shaft Maximum Radial Play | 0.0008 INCHES IN |
| Compensation Method | RESISTOR COMPENSATED AND WINDING COMPENSATED |
| Schematic Diagram Designator | 2 ROTOR, 2 STATOR |
| Spline Tooth Diametral Pitch | 120 SINGLE SHAFT |
| Shoulder Diameter | 1.4400 INCHES NOMINAL IN |
| Cubic Measure | 5.15082 CUBIC INCHES |
| Material | STEEL CORROSION RESISTING BODY |
| Maximum Temp Rise | 20.0 CELSIUS DEGC |
| 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 |
|---|---|
| 7-217221350 | The Boeing Company (USA) |
| CT90948006 PRIMARY | Kearfott Corp Div Kearfott Corporation (USA) |
| Reference | Meaning |
|---|---|
| 7-217221350-3 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| CT90948006 | 5/9 Secondary reference U.S. Government activity |
| 7-217221350-3 | 5/9 Secondary reference The Boeing Company |
NSN 5990-01-221-0609 is a Resolver,electrical, manufactured by Kearfott Corp Div Kearfott Corporation, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-01-221-0609 has 2 manufacturer part numbers on file: 7-217221350 (The Boeing Company), CT90948006 (Kearfott Corp Div Kearfott Corporation).
Key specifications for CT90948006: Body Diameter: 1.4400 INCHES NOMINAL IN; Flange Diameter: 1.4400 INCHES NOMINAL IN; Length: 0.0400 INCHES NOMINAL SHOULDER IN; Body Style: STANDARD ROUND, ROTATABLE HOUSING. 17 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 5990-01-221-0609 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.