The Synchro,receiver, cataloged under National Stock Number 5990-00-677-6493, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Elac Sonar Gmbh. Government technical data includes 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5990-00-677-6493 |
| Primary Part Number | 069744110 |
| Item Name | Synchro,receiver |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Elac Sonar Gmbh |
| Status | ACTIVE |
| Body Size | 23 |
| Shaft Type | SPLINE W/THREADS SINGLE SHAFT |
| Shaft Diameter | 0.1872 INCHES NOMINAL SINGLE SHAFT IN |
| Torque Gradient Per Angular Deg | 0.130 INCH-OUNCES NOMINAL IN |
| Rotor Input Electrical Power Rating | 4.5 WATTS NOMINAL |
| Spline Tooth Quantity | 21 SINGLE SHAFT |
| Shaft Thread Length | 0.2900 INCHES NOMINAL SINGLE SHAFT IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Rotor Input Voltage Rating in Volts | 115.0 NOMINAL |
| Shaft Length | 0.5000 INCHES NOMINAL SINGLE SHAFT IN |
| Spline Tooth Diametral Pitch | 120 SINGLE SHAFT |
| Nondefinitive Spec/std Data | 23TR4B TYPE |
| Shaft Nominal Thread Size | 0.1900 INCHES SINGLE SHAFT IN |
| Transformation Ratio | 0.783 ROTOR TO STATOR NOMINAL |
| Shaft Thread Direction | RIGHT-HAND SINGLE SHAFT |
| Shaft Thread Series Designator | UNF SINGLE SHAFT |
| Rotor Input Current Rating | 800.0 MILLIAMPERES NOMINAL |
| Terminal Type and Quantity | 5 SCREW |
| Shaft Thread Class | 2A SINGLE SHAFT A |
| 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 |
|---|---|
| 069744110 | Elac Sonar Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| MILS20708-50 | 4/1 Identification reference U.S. Government activity |
| 23TR4B | 2/2 Government specification standardization U.S. Government activity |
NSN 5990-00-677-6493 is a Synchro,receiver, manufactured by Elac Sonar Gmbh, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-00-677-6493 has 1 manufacturer part number on file: 069744110 (Elac Sonar Gmbh).
2 possible matches (shared part number, not a government interchangeability claim): 5990-00-904-3314, 5990-00-969-6565. Verify interchangeability with system specifications before substitution.
Key specifications for 069744110: Body Size: 23; Shaft Type: SPLINE W/THREADS SINGLE SHAFT; Shaft Diameter: 0.1872 INCHES NOMINAL SINGLE SHAFT IN; Torque Gradient Per Angular Deg: 0.130 INCH-OUNCES NOMINAL IN. 19 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.