5305-01-435-3143 SCREW,CAP,HEXAGON HEAD Index 5305-01-435-3145 SCREW,CLOSE TOLERANCE

National Stock Number:
5306-01-435-3144

Federal Supply Class:
5306

National Item Identification Number:
014353144

Description:
BOLT,MACHINE

Detail:
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.


Manufacturer Information:
B18234B08020N05047THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
B18234B08020N80204AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED


Techincal Specification:
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH19.6 MILLIMETERS MINIMUM AND
20.4 MILLIMETERS MAXIMUM
MATERIALSTEEL PROPERTY CLASS 10.9 OVERALL
THREAD LENGTH17.7 MILLIMETERS MAXIMUM
HEAD STYLEHEXAGON EXTENDED WASHER
THREAD SERIES DESIGNATORM
NOMINAL THREAD DIAMETER8.0 MILLIMETERS
THREAD PITCH IN MILLIMETERS1.25
EXTERNAL THREAD TOLERANCE CLASS6G
SURFACE TREATMENTZINC OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-Z-325,TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD HEIGHT8.1 MILLIMETERS MAXIMUM
WIDTH BETWEEN FLATS9.64 MILLIMETERS MINIMUM AND
10.00 MILLIMETERS MAXIMUM
EXTENDED WASHER DIAMETER18.0 MILLIMETERS MAXIMUM
EXTENDED WASHER THICKNESS4.8 MILLIMETERS MINIMUM


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