The Synchro,differential Receiver, cataloged under National Stock Number 5990-00-504-6531, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-00-504-6531 |
| Primary Part Number | 561790PC6 |
| Item Name | Synchro,differential Receiver |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Body Size | 23 |
| Shaft Type | ROUND, THREADED SINGLE SHAFT |
| Body Diameter | 1.9200 INCHES MINIMUM AND 1.9400 INCHES MAXIMUM IN |
| Flange Diameter | 2.2480 INCHES MINIMUM AND 2.2520 INCHES MAXIMUM IN |
| Shaft Diameter | 0.1820 INCHES MINIMUM AND 0.1825 INCHES MAXIMUM SINGLE SHAFT IN |
| Length | 1.6900 INCHES MINIMUM AND 1.7100 INCHES MAXIMUM SHOULDER IN |
| Body Style | STANDARD ROUND, ROTATABLE HOUSING |
| Flange Thickness | 0.2450 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN |
| Stator Input Current Rating | 300.0 MILLIAMPERES NOMINAL |
| Shaft Thread Length | 0.1450 INCHES MINIMUM AND 0.1550 INCHES MAXIMUM SINGLE SHAFT IN |
| Mounting Surface to Terminal End Distance | 1.8100 INCHES NOMINAL IN |
| Frequency in Hertz | 60.0 NOMINAL |
| Stator Input Electrical Power Rating | 8.0 WATTS NOMINAL |
| Terminal Location | REAR |
| Shaft End Play Determining Weight | 48.0 OUNCES OZ |
| Shaft Maximum Radial Play | 0.0010 INCHES IN |
| Schematic Diagram Designator | 1 Y-ROTOR, 1 Y-STATOR |
| Shaft Length | 0.2500 INCHES MINIMUM AND 0.2700 INCHES MAXIMUM SINGLE SHAFT IN |
| Nondefinitive Spec/std Data | 2D TYPE |
| Shoulder Diameter | 1.9200 INCHES MINIMUM AND 1.9400 INCHES MAXIMUM IN |
| Stator Input Voltage Rating in Volts | 115.0 NOMINAL |
| Shaft Thread Direction | RIGHT-HAND SINGLE SHAFT |
| Shaft Thread Series Designator | UNF SINGLE SHAFT |
| Terminal Type and Quantity | 6 TAB W/SCREW |
| Shaft Thread Class | 2A SINGLE SHAFT A |
| Shaft End Play | 0.0040 INCHES MINIMUM AND 0.0080 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 561790PC6 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| LD284076 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 950514 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 950511 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| MILS2335TYPE2D | 4/1 Identification reference U.S. Government activity |
NSN 5990-00-504-6531 is a Synchro,differential Receiver, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-00-504-6531 has 4 manufacturer part numbers on file: 561790PC6 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), LD284076 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 950514 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 950511 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
3 possible matches (shared part number, not a government interchangeability claim): 5963-00-538-9646, 9905-01-694-1618, 7690-01-694-2320. Verify interchangeability with system specifications before substitution.
Key specifications for 561790PC6: Body Size: 23; Shaft Type: ROUND, THREADED SINGLE SHAFT; Body Diameter: 1.9200 INCHES MINIMUM AND 1.9400 INCHES MAXIMUM IN; Flange Diameter: 2.2480 INCHES MINIMUM AND 2.2520 INCHES MAXIMUM IN. 26 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 5990-00-504-6531 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.