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		                        | National Stock Number:
 4730-00-433-0751
 
 Federal Supply Class:
 4730
 
 National Item Identification Number:
 004330751
 
 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.
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 Manufacturer Information:
 
 | 21XB0093-1 | 04638 | TRANSDIGM INC | 
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 Techincal Specification:
 
 | THREAD SERIES | UNF |  | NOMINAL THREAD SIZE | 0.438 INCHES |  | THREAD QUANTITY PER INCH | 20 |  | THREAD CLASS | 2B |  | THREAD DIRECTION | RIGHT-HAND |  | MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |  | NUT STYLE | TUBE COUPLING |  | NUT HEIGHT | 0.630 INCHES NOMINAL |  | WIDTH ACROSS FLATS | 0.500 INCHES NOMINAL |  | LENGTH TO SHOULDER | 0.440 INCHES NOMINAL |  | SMALLEST INSIDE DIAMETER | 0.246 INCHES NOMINAL |  | SEAT ANGLE | 0.30 DEGREES NOMINAL |  | FABRICATION METHOD | CAST |  | NOMINAL TUBE OUTSIDE DIAMETER | 0.250 INCHES | 
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