NSN 5990-00-798-7793, 5990007987793
SYNCHRO ASSEMBLY

Federal Supply Classification: FSC 5990 - Synchros and Resolvers
National Item Identification Number: NIIN 007987793
Codification Country: United States
Item Name Code: INC 61156
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 5990-00-798-7793

National Stock Number (NSN) 5990-00-798-7793, or NIIN 007987793, (synchro assembly) was assigned January 1, 1962 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 3 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 61156. [TWO OR MORE SYNCHROS ON A COMMON MOUNTING OR MOUNTED ON EACH OTHER. DO NOT USE THIS NAME FOR SINGLE SYNCHROS MOUNTED WITH COMMON SYNCHRO ACCESSORIES SUCH AS PULLEYS, GEAR REDUCTION UNITS, STARTING MECHANISMS.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5990007987793 contains an unknown precious metal.

This NSN is associated to Schedule B 9014900000: parts & accessories for direction finding compasses and other navigational instruments and appliances. The Schedule B End Use is listed as marine engines, parts. NAICS classification category 334511: search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing.

This information was last updated on Jul 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) ZCONSISTING OF 1 RESOLVER AND 1 SYNCHRO; CONTROL TRANSFORMER STACKED TOGETHER; RESOLVER ELECTRICAL REQUIREMENTS; 9.3 MA,95 MW,26 VOLTS,400 CYCLES PER SECOND; ROTOR IMPEDANCE WITH STATOR OPEN IN OHMS 1100; REACTANCE IN @OHMS 2570; SYNCHRO; CONTROL TRANSFORMER REQUIREMENTS; 10.2 VOLTS,30 MA,73 MW,400 CYCLES PER SECOND; ELECTRICAL ERROR 7 @MINUTES MAX; RESOLVER HAS 3 TURRET TYPE TERMINALS; TRANSFORMER HAS 5 WIRE LEAD TYPE TERMINALS; BODY DIM.,2.875 IN. MAX INCLUDING TERMINALS,0.957 IN DIA
NONGOVERNMENT DOCUMENT DATA: (ZZZS) 193883-1-37695
GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) CONSISTING OF 1 RESOLVER AND 1 SYNCHRO; CONTROL TRANSFORMER STACKED TOGETHER; RESOLVER ELECTRICAL REQUIREMENTS; 9.3 MA,95 MW,26 VOLTS,400 CYCLES PER SECOND; ROTOR IMPEDANCE WITH STATOR OPEN IN OHMS 1100; REACTANCE IN @OHMS 2570; SYNCHRO; CONTROL TRANSFORMER REQUIREMENTS; 10.2 VOLTS,30 MA,73 MW,400 CYCLES PER SECOND; ELECTRICAL ERROR 7 @MINUTES MAX; RESOLVER HAS 3 TURRET TYPE TERMINALS; TRANSFORMER HAS 5 WIRE LEAD TYPE TERMINALS; BODY DIM.,2.875 IN. MAX INCLUDING TERMINALS,0.957 IN DIA