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National Stock Number: 4730-01-199-8176
Federal Supply Class: 4730
National Item Identification Number: 011998176
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:
| 2640-650 | 96169 | ELECTRIC BOAT CORPORATION | | 2640-650 PIECE 5 | 96169 | ELECTRIC BOAT CORPORATION | | SS-845-2109894 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | SS-845-2109894 PIECE 5 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| CASEHARDENING INDICATOR | NOT CASEHARDENED | | HOLE OR SLOT QUANTITY | 2 | | MAJOR UNTHREADED OUTSIDE DIAMETER | 2.875 INCHES NOMINAL | | OVERALL LENGTH | 0.750 INCHES NOMINAL | | MATERIAL | COPPER ALLOY | | SMALLEST INSIDE DIAMETER | 2.281 INCHES NOMINAL | | SCREW THREAD SERIES DESIGNATOR | UN | | SCREW THREAD LOCATION | EXTERNAL | | SLOT WIDTH | 0.250 INCHES NOMINAL | | STYLE DESIGNATOR | ROUND SLOTTED, EXTERNAL THREAD, BOSS | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 2.875 INCHES NOMINAL | | THREAD SIZE | 0.375-16 |
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