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National Stock Number:
5305-01-617-9878
Federal Supply Class:
5305
National Item Identification Number:
016179878
Description:
SCREW,SHOULDER
Detail:
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD.
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Manufacturer Information:
| AES20U312500BB3A81 | 05047 | THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS | | AES20U312500BB3A81 | 56878 | SPS TECHNOLOGIES, LLC | | B183A031C050HSHS | 80204 | AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED |
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Techincal Specification:
| SURFACE TREATMENT | ZINC OVERALL | | INTERNAL DRIVE STYLE | HEXAGON | | SPECIAL FEATURES | MATERAIL: ASTM A574 ALLOY STEEL | | THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.3125 INCHES | | THREAD LENGTH | 0.500 INCHES NOMINAL | | MATERIAL | STEEL OVERALL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | 5/16" UNC-3 X 0.500 |
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