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National Stock Number:
4730-00-491-8916
Federal Supply Class:
4730
National Item Identification Number:
004918916
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:
| A51G10555-11 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | A51G10555-11 | 61174 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | A51G10555-11 | 79RG9 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| CASEHARDENING INDICATOR | NOT CASEHARDENED | | HOLE OR SLOT QUANTITY | 4 | | MAJOR UNTHREADED OUTSIDE DIAMETER | 2.991 INCHES MINIMUM AND 3.300 INCHES MAXIMUM | | OVERALL LENGTH | 0.500 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6415 ASSN STD SINGLE MATERIAL RESPONSE | | MATERIAL HARDNESS RATING | 29.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM | | MATERIAL | STEEL COMP 4340 | | SCREW THREAD LOCATION | INTERNAL AND EXTERNAL | | SCREW THREAD SERIES DESIGNATOR | UNJ | | SLOT WIDTH | 0.125 INCHES NOMINAL | | SMALLEST INSIDE DIAMETER | 2.564 INCHES MINIMUM AND 2.573 INCHES MAXIMUM | | STYLE DESIGNATOR | ROUND SLOTTED, EXTERNAL THREAD, BOSS | | SURFACE TREATMENT | CADMIUM AND CHROMATE | | THREAD CLASS | 3B AND 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.500 INCHES NOMINAL | | THREAD SIZE | 2 5/8 IN-16 AND 3 IN-16 |
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