5305-01-572-1220 SCREW,CAP,HEXAGON HEAD Index 5305-01-572-1268 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-572-1245

Federal Supply Class:
5305

National Item Identification Number:
015721245

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:
90854A22339428MCMASTER-CARR SUPPLY CO


Techincal Specification:
THREAD SERIES DESIGNATORM
THREAD LENGTH25.0 MILLIMETERS NOMINAL
FASTENER LENGTH32.5 MILLIMETERS NOMINAL
MATERIALSTEEL OVERALL
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD DIAMETER12.0 MILLIMETERS
THREAD PITCH IN MILLIMETERS1.7
SURFACE TREATMENTZINC OVERALL
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND
39.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH145000 POUNDS PER SQUARE INCH
HEAD HEIGHT7.5 MILLIMETERS NOMINAL
WIDTH BETWEEN FLATS18.0 MILLIMETERS NOMINAL


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