4730-01-031-8871 NUT,UNION Index 4730-01-031-8873 TAILPIECE,UNION

National Stock Number:
4730-01-031-8872

Federal Supply Class:
4730

National Item Identification Number:
010318872

Description:
NUT,UNION

Detail:
AN INTERNALLY THREADED NUT WHICH HAS AN INTERNAL SEAT OR SHOULDER DESIGNED TO ENGAGE THE NUT RETAINING FLANGE OF A UNION TAILPIECE. THE THREADED PORTION IS USED TO ENGAGE THE THREAD PIECE OF A UNION, UNION ELBOR OR THE LIKE. EXCLUDES NUT (1), TUBE COUPLING.


Manufacturer Information:
810-1385884 PIECE 8 2IN53711NAVAL SEA SYSTEMS COMMAND
810-1385884 PIECE 8 2INL103950NAVAL INVENTORY CONTROL POINT MECHANICSBURG


Techincal Specification:
CRITICALITY CODE JUSTIFICATIONZZZY
MATERIALNICKEL ALLOY OR STEEL CORROSION RESISTING OVERALL
NOMINAL THREAD SIZE3.750 INCHES
NUT HEIGHT1.500 INCHES NOMINAL
NUT STYLEHEXAGON
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
SHOULDER SEAT DIAMETER3.750 INCHES NOMINAL
SHOULDER STEP WIDTH0.375 INCHES NOMINAL
SHOULDER WIDTH0.313 INCHES NOMINAL
SMALLEST INSIDE DIAMETER3.190 INCHES NOMINAL
WIDTH ACROSS FLATS4.375 INCHES NOMINAL
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUN
THREAD QUANTITY PER INCH12


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