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National Stock Number:
4730-00-821-0189
Federal Supply Class:
4730
National Item Identification Number:
008210189
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:
| 105-01495 | 79470 | DANA CORP WEATHERHEAD DIV | | AS18280 | 0U583 | SAE INTERNATIONAL | | MS21937-4L | 00624 | EATON AEROQUIP LLC | | AS21937 | 0U583 | SAE INTERNATIONAL | | AS21937 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | | AS18280 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | | MS21937-4L | 01276 | EATON-AEROQUIP INC DIV FLUID CONNECTORS PRODUCTS | | MS21937-4L | 03647 | GLOBE AEROSPACE INC | | MS21937-4L | 0U583 | SAE INTERNATIONAL | | MS21937-4L | 14397 | FABER ENTERPRISES, INC. | | MS21937-4L | 17439 | CHICAGO PNEUMATIC TOOL CO | | MS21937-4L | 45681 | PARKER-HANNIFIN CORPORATION | | MS21937-4L | 50948 | PARKER HANNIFIN CORP STRATOFLEX DIV AIRCRAFT FITTINGS OPN | | MS21937-4L | 71563 | COLLINS ENGINEERING CORP | | MS21937W4L | 0U583 | SAE INTERNATIONAL | | SAE-AS18280 | 0U583 | SAE INTERNATIONAL | | MS21937W4L | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC | | MS21937-4L | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | MS21937-4L | F0422 | ZODIAC AEROTECHNICS FUEL & INERTINGSYSTEMS | | MS21937-4L | R1120 | SATAIR A/S |
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Techincal Specification:
| CASEHARDENING INDICATOR | NOT CASEHARDENED | | LARGEST INSIDE DIAMETER | 0.562 INCHES NOMINAL | | LENGTH TO SHOULDER | 0.344 INCHES NOMINAL | | MAJOR UNTHREADED OUTSIDE DIAMETER | 0.687 INCHES NOMINAL | | OVERALL LENGTH | 0.406 INCHES NOMINAL | | MATERIAL | ALUMINUM ALLOY 7075 | | SCREW THREAD LOCATION | INTERNAL | | SCREW THREAD SERIES DESIGNATOR | UNF | | SPECIFICATION/STANDARD DATA | 81343-SAE AS21937 MANUFACTURERS STANDARD | | STYLE DESIGNATOR | HEXAGON, INTERNAL THREAD, SHOULDERED | | WIDTH ACROSS FLATS | 1.000 INCHES NOMINAL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3B | | THREAD LENGTH | 0.250 INCHES NOMINAL | | THREAD SIZE | 7/16IN-20 | | UNTHREADED PORTION LENGTH | 0.156 INCHES NOMINAL |
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