5305-01-413-8477 SCREW,CLOSE TOLERANCE Index 5305-01-413-8479 SCREW,CAP,HEXAGON HEAD

National Stock Number:
5305-01-413-8478

Federal Supply Class:
5305

National Item Identification Number:
014138478

Description:
SCREW,CAP,HEXAGON HEAD

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.


Manufacturer Information:
845-6603141-2753711NAVAL SEA SYSTEMS COMMAND
845-6603146-353711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
FASTENER LENGTH1.920 INCHES MINIMUM AND 2.060 INCHES MAXIMUM
HEAD HEIGHT0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM
HEAD STYLEHEXAGON
HOLE CONFIGURATION STYLEHEXAGON FLATS
HOLE DIAMETER0.064 INCHES MINIMUM AND 0.082 INCHES MAXIMUM
HOLE QUANTITY1
HOLE TYPEDRILLED
MATERIAL DOCUMENT AND CLASSIFICATIONSAE J429, GRADE 5 ASSN STD ALL MATERIAL RESPONSES OVERALL
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.750 INCHES
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.750 INCHES MINIMUM
THREAD QUANTITY PER INCH10
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
WIDTH BETWEEN FLATS1.100 INCHES MINIMUM AND 1.125 INCHES MAXIMUM


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