The Synchro,control Transformer, cataloged under National Stock Number 5990-00-644-0123, is classified within Federal Supply Class 5990 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Sae International Dba Sae International. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5990-00-644-0123 |
| Primary Part Number | 8212775 |
| Item Name | Synchro,control Transformer |
| FSC / FSG | 5990 / 59 — No Item Name Available |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Frequency in Hertz | 400.0 NOMINAL |
| Body Size | 23 |
| Maximum Total Null Voltage Output in Millivolts Per Volt | 60.00 |
| Specification/standard Data | 81349-MIL-S-20708/94 GOVERNMENT SPECIFICATION |
| Electrical Error Angular Range in Minutes | -6.0 TO 6.0 |
| Shaft Maximum Runout | 0.0015 INCHES IN |
| Plus J Zrs Reactance in Ohms | 741.00 NOMINAL |
| Terminal Location | REAR |
| Pilot Length | 0.0460 INCHES MAXIMUM IN |
| Shaft Thread Series Designator | UNF SINGLE SHAFT |
| Plus J Zso Reactance in Ohms | 11870.00 NOMINAL |
| Zrs Resistance in Ohms | 675.00 NOMINAL |
| Shaft Length | 0.6930 INCHES MINIMUM AND 0.7190 INCHES MAXIMUM SINGLE SHAFT IN |
| Shaft Thread Class | 2A SINGLE SHAFT A |
| Maximum Temp Rise | 45.0 CELSIUS DEGC |
| Terminal Type and Quantity | 7 SCREW |
| Shaft Radial Play Test Point | 0.250 INCHES MAXIMUM IN |
| Test Data Document | 81349-MIL-S-20708 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.). |
| Spline Tooth Diametral Pitch | 96 SINGLE SHAFT |
| Stator Input Voltage Rating in Volts | 90.0 NOMINAL |
| Shaft Thread Direction | RIGHT-HAND SINGLE SHAFT |
| Stator Input Electrical Power Rating | 80.0 MILLIWATTS NOMINAL |
| Stator Input Current Rating | 7.7 MILLIAMPERES MAXIMUM |
| Shaft End Play | 0.0030 INCHES NOMINAL IN |
| Shaft Diameter | 0.2403 INCHES MINIMUM AND 0.2405 INCHES MAXIMUM SINGLE SHAFT IN |
| Shaft Nominal Thread Size | 0.250 INCHES SINGLE SHAFT IN |
| Zso Resistance in Ohms | 1495.00 NOMINAL |
| Mounting Surface to Terminal End Distance | 3.4350 INCHES MINIMUM AND 3.4450 INCHES MAXIMUM IN |
| Aft of First Flange Diameter | 1.9985 INCHES MINIMUM AND 1.9995 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING BODY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| SAE-AS20708/94 | Sae International Dba Sae International (USA) |
| MIL-S-20708/94 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 23CT4A | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 8212775 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MS51082-4 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 8212775 PRIMARY | Sae International Dba Sae International (USA) |
NSN 5990-00-644-0123 is a Synchro,control Transformer, manufactured by Sae International Dba Sae International, classified under FSC 5990 (No Item Name Available). Status: active.
NSN 5990-00-644-0123 has 6 cross-referenced part numbers: SAE-AS20708/94 (Sae International Dba Sae International), MIL-S-20708/94 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 23CT4A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 8212775 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS51082-4 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.
There are 12 known substitutes for 5990-00-644-0123: 5990-00-553-6711, 5990-00-636-4111, 5990-00-636-4119 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 8212775: Frequency in Hertz: 400.0 NOMINAL; Body Size: 23; Maximum Total Null Voltage Output in Millivolts Per Volt: 60.00; Specification/standard Data: 81349-MIL-S-20708/94 GOVERNMENT SPECIFICATION. 30 total characteristics are documented in the Federal Logistics Information System.