The Resolver,electrical, cataloged under National Stock Number 5990-01-481-6508, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-01-481-6508 |
| Primary Part Number | 12380446 |
| Item Name | Resolver,electrical |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Shaft Type | ROUND SINGLE SHAFT |
| Flange Diameter | 1.0400 INCHES MINIMUM AND 1.0800 INCHES MAXIMUM IN |
| Undercut Width | 0.0450 INCHES MINIMUM AND 0.0550 INCHES MAXIMUM IN |
| Shaft Diameter | 0.1870 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM SINGLE SHAFT IN |
| Undercut Diameter | 1.0000 INCHES NOMINAL IN |
| Body Style | STANDARD ROUND A |
| Flange Thickness | 0.0880 INCHES MINIMUM AND 0.0980 INCHES MAXIMUM IN |
| Mounting Surface to Terminal End Distance | 1.2500 INCHES MAXIMUM IN |
| Frequency in Hertz | 6400.0 NOMINAL |
| Shaft Length | 0.5000 INCHES NOMINAL SINGLE SHAFT IN |
| Pilot Diameter | 0.5500 INCHES NOMINAL IN |
| Pilot Length | 0.0520 INCHES MINIMUM AND 0.0820 INCHES MAXIMUM IN |
| Terminal Type and Quantity | 4 PIN |
| 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 |
|---|---|
| RSYN-11-35-2771 | Measurement Specialties Inc (USA) |
| U-222199 | Electromech Technologies Llc (USA) |
| 12380446 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| U-222199 | 5/9 Secondary reference U.S. Government activity |
NSN 5990-01-481-6508 is a Resolver,electrical, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-01-481-6508 has 3 manufacturer part numbers on file: RSYN-11-35-2771 (Measurement Specialties Inc), U-222199 (Electromech Technologies Llc), 12380446 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12380446: Shaft Type: ROUND SINGLE SHAFT; Flange Diameter: 1.0400 INCHES MINIMUM AND 1.0800 INCHES MAXIMUM IN; Undercut Width: 0.0450 INCHES MINIMUM AND 0.0550 INCHES MAXIMUM IN; Shaft Diameter: 0.1870 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM SINGLE SHAFT IN. 13 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 5990-01-481-6508 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.