The Synchro,differential Transmitter, cataloged under National Stock Number 5990-01-054-4255, is classified within Federal Supply Class 5990 (Synchros and Resolvers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 29 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-01-054-4255 |
| Primary Part Number | M20708/22-02C |
| Item Name | Synchro,differential Transmitter |
| FSC / FSG | 5990 / 59 — Synchros and Resolvers |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Body Size | 15 |
| Shaft Type | ROUND SINGLE SHAFT |
| Zso-90 Resistance in Ohms | 2050.00 MINIMUM AND 2600.00 MAXIMUM |
| Flange Diameter | 1.4370 INCHES NOMINAL IN |
| Undercut Width | 0.0780 INCHES NOMINAL IN |
| Shaft Diameter | 0.1872 INCHES NOMINAL SINGLE SHAFT IN |
| Length | 0.1320 INCHES NOMINAL SHOULDER IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | STANDARD ROUND B |
| Flange Thickness | 0.0930 INCHES NOMINAL IN |
| Phase Shift Angle in Deg | 9.000 INPUT TO OUTPUT NOMINAL |
| Mounting Surface to Terminal End Distance | 2.6770 INCHES MAXIMUM IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Plus J Zso Reactance in Ohms | 77.00 MINIMUM AND 83.00 MAXIMUM |
| Zrs Resistance in Ohms | 900.00 MINIMUM AND 1200.00 MAXIMUM |
| Terminal Location | REAR |
| Shaft Length | 0.5000 INCHES NOMINAL SINGLE SHAFT IN |
| Specification/standard Data | 81349-MIL-S-20708/22 GOVERNMENT SPECIFICATION |
| Body Material | ALUMINUM ALLOY |
| Pilot Diameter | 0.8750 INCHES NOMINAL IN |
| Maximum Fundamental Null Voltage in Millivolts Per Volt | 60.00 INPUT |
| Shoulder Diameter | 1.3120 INCHES NOMINAL IN |
| Maximum Total Null Voltage Output in Millivolts Per Volt | 100.00 |
| Transformation Ratio | 1.154 ROTOR TO STATOR NOMINAL |
| Pilot Length | 0.0400 INCHES NOMINAL IN |
| Zso Resistance in Ohms | 2050.00 MINIMUM AND 2600.00 MAXIMUM |
| Test Data Document | 81349-MILS20708 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Actuator Friction Torque at Minus 55 Deg Celsius | 20.00 INCH-OUNCES NOMINAL IN |
| Terminal Type and Quantity | 5 SCREW |
| 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 |
|---|---|
| M20708/22-02C PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| SAE-AS20708/22 | 3/1 Design control — primary reference Sae International Dba Sae International |
| 15CDX6C | 5/1 Secondary reference U.S. Government activity |
| MIL-S-20708/22 | 5/9 Secondary reference U.S. Government activity |
| M20708/22-02C | 5/9 Secondary reference U.S. Government activity |
| VCDX15-6N3 | 5/1 Secondary reference General Dynamics Motion Control Llc |
NSN 5990-01-054-4255 is a Synchro,differential Transmitter, manufactured by Sae International Dba Sae International, classified under FSC 5990, Synchros and Resolvers. Status: active.
NSN 5990-01-054-4255 has 1 manufacturer part number on file: M20708/22-02C (Sae International Dba Sae International).
Key specifications for M20708/22-02C: Body Size: 15; Shaft Type: ROUND SINGLE SHAFT; Zso-90 Resistance in Ohms: 2050.00 MINIMUM AND 2600.00 MAXIMUM; Flange Diameter: 1.4370 INCHES NOMINAL IN. 29 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.