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		                        | National Stock Number:
 4730-00-218-5958
 
 Federal Supply Class:
 4730
 
 National Item Identification Number:
 002185958
 
 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:
 
 | 3N171PC46 | 54370 | ALFA LAVAL INC. |  | AC5253-3 | 54370 | ALFA LAVAL INC. | 
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 Techincal Specification:
 
 | THREAD SERIES | UN |  | NOMINAL THREAD SIZE | 1.125 INCHES |  | THREAD QUANTITY PER INCH | 8 |  | THREAD CLASS | 2B |  | THREAD DIRECTION | RIGHT-HAND |  | MATERIAL | NICKEL ALLOY OVERALL |  | SURFACE TREATMENT | PASSIVATE OVERALL |  | NUT STYLE | TUBE COUPLING |  | NUT HEIGHT | 1.570 INCHES NOMINAL |  | LARGEST OUTSIDE DIAMETER | 1.494 INCHES NOMINAL |  | WIDTH ACROSS FLATS | 1.062 INCHES NOMINAL |  | LENGTH TO SHOULDER | 0.970 INCHES NOMINAL |  | SMALLEST INSIDE DIAMETER | 0.595 INCHES NOMINAL |  | FABRICATION METHOD | MACHINED |  | NOMINAL TUBE OUTSIDE DIAMETER | 0.750 INCHES | 
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