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NSN 5990-00-179-1871, 5990001791871
SYNCHRO,DIFFERENTIAL TRANSMITTER

Federal Supply Classification
FSC 5990 - Synchros and Resolvers
National Item Identification Number
NIIN 001791871
Codification Country
United States
Item Name Code
INC 02071
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.
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DLMS® Summary

National Stock Number 5990-00-179-1871

National Stock Number (NSN) 5990-00-179-1871, or NIIN 001791871, (synchro,differential transmitter) was assigned May 23, 1969 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 8 manufacturer part numbers associated with this NSN. 4 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 4 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.

This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Oct 04, 2018. There have been 4 contracts issued for this part number, with 5 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE7M119P0130, SPE7M515M3425, SPE7M515M2903, SPM4A111G0001, SPM4A111G0001. The total value of the awarded contracts has been US$ 9,092.16.

This NSN is somewhat common among different platforms, belonging to 4 different weapons systems.

There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 15,564. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) Acquisition of this part is controlled by QPL procedures. Valid AMCs: 1 and 2.

This NSN is assigned to Item Name Code (INC) 02071. [A SYNCHRO, THE ROTOR OF WHICH IS MECHANICALLY POSITIONED FOR MODIFYING ELECTRICAL ANGULAR INFORMATION, RECEIVED FROM A TRANSMITTER SYNCHRO AND TRANSMITTING TO RECEIVER SYNCHRO OR CONTROL TRANSFORMER SYNCHRO ELECTRICAL INFORMATION CORRESPONDING TO THE SUM OR DIFFERENCE OF THE ELECTRICAL INPUT ANGLE AND ITS ROTOR POSITION ANGLE. DOES NOT INCLUDE VARIABLE RESISTORS, GONIOMETERS, VARIABLE TRANSFORMERS, OR ITEMS WITH DIALS.]. 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 5990001791871 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 .


Technical Characteristics

III FRAGILITY FACTOR
(AFJN) MODERATELY RUGGED
ELECTRICAL ERROR ANGULAR RANGE IN MINUTES
(AJVL) -7.0 TO 7.0
ACTUATOR FRICTION TORQUE AT PLUS 25 DEG CELSIUS
(AJVT) 0.07 INCH-OUNCES MAXIMUM
ALIGNMENT HOLE BOLT CIRCLE DIAMETER
(CTCW) 0.8120 INCHES NOMINAL
ALIGNMENT HOLE DEPTH
(CRSY) 0.1250 INCHES NOMINAL
ALIGNMENT HOLE QUANTITY
(AJVW) 4
BODY MATERIAL
(CQRG) STEEL CORROSION RESISTING
BODY SIZE
(AJSL) 11
BODY STYLE
(AAQL) STANDARD ROUND C
FLANGE DIAMETER
(ABKK) 1.0570 INCHES MINIMUM AND 1.0620 INCHES MAXIMUM
FLANGE THICKNESS
(ABKU) 0.0930 INCHES NOMINAL
FRAGILITY FACTOR
(AFJN) MODERATELY RUGGED
FREQUENCY IN HERTZ
(AJSS) 400.0 NOMINAL
OVERALL LENGTH
(ABHP) 2.4060 INCHES NOMINAL
MAXIMUM FUNDAMENTAL NULL VOLTAGE IN MILLIVOLTS PER VOLT
(AJVG) 60.00 OUTPUT
MAXIMUM TEMP RISE
(AHCG) 20.0 DEG CELSIUS
MAXIMUM TOTAL NULL VOLTAGE OUTPUT IN MILLIVOLTS PER VOLT
(AJVH) 90.00
MOUNTING SURFACE TO TERMINAL END DISTANCE
(AJWX) 1.8510 INCHES NOMINAL
SHAFT DIAMETER
(ABWV) 0.1872 INCHES NOMINAL SINGLE SHAFT
SHAFT NOMINAL THREAD SIZE
(CWBH) 0.190 INCHES SINGLE SHAFT
SHAFT LENGTH
(ABXF) 0.5550 INCHES NOMINAL SINGLE SHAFT
SHAFT THREAD CLASS
(AKAN) 2A SINGLE SHAFT
SHAFT THREAD DIRECTION
(AKAF) RIGHT-HAND SINGLE SHAFT
SHAFT THREAD LENGTH
(CQWQ) 0.2000 INCHES NOMINAL SINGLE SHAFT
SHAFT THREAD SERIES DESIGNATOR
(AJYY) UNF SINGLE SHAFT
SHAFT TYPE
(CRSJ) SPLINE W/THREADS SINGLE SHAFT
SHOULDER DIAMETER
(AAVH) 0.9995 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM
SHOULDER LENGTH
(AJWR) 0.0620 INCHES NOMINAL
PILOT DIAMETER
(AAVL) 0.6245 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM
PILOT LENGTH
(AJWQ) 0.0620 INCHES NOMINAL
PHASE SHIFT ANGLE IN DEG
(AJVF) 4.000 INPUT TO OUTPUT NOMINAL
TEST DATA DOCUMENT
(TEST) 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.).
TRANSFORMATION RATIO
(CSJY) 1.154 ROTOR TO STATOR NOMINAL
UNDERCUT DIAMETER
(ABPA) 0.9750 INCHES NOMINAL
UNDERCUT WIDTH
(ABPC) 0.0620 INCHES NOMINAL
ZRS IMPEDANCE ANGLE IN DEG
(AJTM) 23.00 MINIMUM AND 33.00 MAXIMUM
ZRS IMPEDANCE MAGNITUDE IN OHMS
(AJTL) 470.00 MINIMUM AND 570.00 MAXIMUM
ZSO IMPEDANCE ANGLE IN DEG
(AJTK) 79.00 MINIMUM AND 85.00 MAXIMUM
ZSO IMPEDANCE MAGNITUDE IN OHMS
(AJTJ) 1590.00 MINIMUM AND 2050.00 MAXIMUM
SPECIFICATION/STANDARD DATA
(ZZZK) 81349-MIL-S-20708/81 GOVERNMENT SPECIFICATION
SPLINE TOOTH DIAMETRAL PITCH
(AJXA) 120 SINGLE SHAFT
SPLINE TOOTH QUANTITY
(AJVM) 21 SINGLE SHAFT
STATOR INPUT CURRENT RATING
(AJSP) 49.0 MILLIAMPERES MAXIMUM
STATOR INPUT ELECTRICAL POWER RATING
(AJSQ) 530.0 MILLIWATTS NOMINAL
STATOR INPUT VOLTAGE RATING IN VOLTS
(AJSN) 90.0 NOMINAL
TERMINAL LOCATION
(CQTM) REAR
TERMINAL TYPE AND QUANTITY
(TTQY) 6 SCREW
BODY MATERIAL
(AAFZ) STEEL, CORROSION RESISTING
ELECTRICAL ERROR ANGULAR RANGE IN MINUTES
(AJVL) -7.0/+7.0
SHAFT THREAD CLASS
(AKAN) 2A

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