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National Stock Number: 4730-01-200-4441
Federal Supply Class: 4730
National Item Identification Number: 012004441
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.
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Manufacturer Information:
| 1385990 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 4690477 ITEM F-10 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| CRITICALITY CODE JUSTIFICATION | ZZZY | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281,CL.A OR B FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY OVERALL | | NOMINAL THREAD SIZE | 1.750 INCHES | | NUT HEIGHT | 1.062 INCHES NOMINAL | | NUT STYLE | HEXAGON | | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS | | SHOULDER STEP WIDTH | 0.250 INCHES MINIMUM AND 0.265 INCHES MAXIMUM | | SMALLEST INSIDE DIAMETER | 1.378 INCHES MINIMUM AND 1.381 INCHES MAXIMUM | | THREAD CLASS | 2B | | THREAD DIRECTION | RIGHT-HAND | | THREAD SERIES | UN | | THREAD QUANTITY PER INCH | 12 | | WIDTH ACROSS FLATS | 2.000 INCHES NOMINAL |
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