1440-00-877-3973 WELD ASSEMBLY Index 1720-00-877-3976 COVER ASSEMBLY

National Stock Number:
4730-00-877-3974

Federal Supply Class:
4730

National Item Identification Number:
008773974

Description:
NUT,TUBE COUPLING

Detail:
AN INTERNALLY THREADED NUT WHICH HAS EITHER AN INTERNAL SEAT OR SHOULDER AND/OR IS DESIGNED TO BE USED WITH A FERRULE, TO MATE WITH THE SEAT OF AN EXTERNALLY THREADED TUBE FITTING TO FORM A LEAKPROOF CONNECTION. EXCLUDES NUT (1), TUBE COUPLING, REDUCING; AND NUT (1), UNION.


Manufacturer Information:
A318477-180020NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION CODE 4.8.8.0.0.B BLDG 148-2


Techincal Specification:
NUT HEIGHT0.266 INCHES NOMINAL
NUT STYLETUBE COUPLING
MATERIALSTEEL OVERALL
NOMINAL TUBE OUTSIDE DIAMETER0.500 INCHES
NOMINAL THREAD SIZE0.688 INCHES
SMALLEST INSIDE DIAMETER0.375 INCHES NOMINAL
THREAD SERIESUNS
THREAD QUANTITY PER INCH18
WIDTH ACROSS FLATS0.875 INCHES NOMINAL
SURFACE TREATMENTPHOSPHATE OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2B


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