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National Stock Number:
4730-00-433-2974
Federal Supply Class:
4730
National Item Identification Number:
004332974
Description:
PACKING NUT
Detail:
AN ITEM HAVING INTERNAL AND/OR EXTERNAL MACHINE THREAD(S) (THREADS OTHER THAN PIPE OR HOSE SERIES), SPECIFICALLY DESIGNED TO RETAIN, BY MEANS OR GROOVE(S), SHOULDER(S), AND THE LIKE, PACKING AND/OR A PACKING GLAND WITHIN A STUFFING BOX. SEE ALSO BUSHING, MACHINE THREAD; INVERTED NUT, TUBE COUPLING; AND NUT, TUBE COUPLING. EXCLUDES PACKING NUT, STUFFING TUBE; AND USE WITH ELECTRICAL CABLE, AND LOCKNUT, PIPE.
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Manufacturer Information:
| AS18280 | 0U583 | SAE INTERNATIONAL | | AS18280 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | | AS21937 | 0U583 | SAE INTERNATIONAL | | MS21927-5H | 0U583 | SAE INTERNATIONAL | | MS21927-5H | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | | AS21937 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | | MS21937-5H | 00624 | EATON AEROQUIP LLC | | MS21937-5H | 0U583 | SAE INTERNATIONAL | | SAE-AS18280 | 0U583 | SAE INTERNATIONAL | | MS21937-5H | 14728 | PRECISION FORM RIVET INC | | MS21937-5H | 14798 | DESIGNED METAL CONNECTIONS INC | | MS21937-5H | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| CASEHARDENING INDICATOR | NOT CASEHARDENED | | LARGEST INSIDE DIAMETER | 0.875 INCHES NOMINAL | | LENGTH TO SHOULDER | 0.344 INCHES NOMINAL | | MAJOR UNTHREADED OUTSIDE DIAMETER | 1.000 INCHES NOMINAL | | MATERIAL | ALUMINUM ALLOY 2024 | | OVERALL LENGTH | 0.500 INCHES NOMINAL | | SCREW THREAD LOCATION | INTERNAL | | SCREW THREAD SERIES DESIGNATOR | UNF | | SMALLEST INSIDE DIAMETER | 0.500 INCHES NOMINAL | | STYLE DESIGNATOR | HEXAGON, INTERNAL THREAD, SHOULDERED | | THREAD CLASS | 3B | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.344 INCHES NOMINAL | | THREAD SIZE | 1/2IN-20 | | UNTHREADED PORTION LENGTH | 0.156 INCHES NOMINAL | | WIDTH ACROSS FLATS | 1.000 INCHES NOMINAL |
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