5305-01-556-2390 SCREW,CAP,HEXAGON HEAD Index 5305-01-557-6776 SCREW,CAP,HEXAGON HEAD

National Stock Number:
5305-01-556-6989

Federal Supply Class:
5305

National Item Identification Number:
015566989

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:
91280A88139428MCMASTER-CARR SUPPLY CO


Techincal Specification:
THREAD SERIES DESIGNATORM
THREAD LENGTH30.0 MILLIMETERS NOMINAL
FASTENER LENGTH30.0 MILLIMETERS NOMINAL
MATERIALSTEEL OVERALL
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD DIAMETER20.0 MILLIMETERS
THREAD PITCH IN MILLIMETERS2.5
SURFACE TREATMENTZINC OVERALL
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND
34.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH120000 POUNDS PER SQUARE INCH
HEAD HEIGHT12.5 MILLIMETERS NOMINAL
WIDTH BETWEEN FLATS30.0 MILLIMETERS NOMINAL
PART NAME ASSIGNED BY CONTROLLING AGENCYCAP SCREW


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