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


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