5305-01-244-6878 SCREW,CAP,SOCKET HEAD Index 5305-01-244-6880 SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-244-6879

Federal Supply Class:
5305

National Item Identification Number:
012446879

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:
X-605052845KOHLER CO ENGINE PLANT DIV
X-6050-552845KOHLER CO ENGINE PLANT DIV


Techincal Specification:
EXTERNAL THREAD TOLERANCE CLASS6G
FASTENER LENGTH74.00 MILLIMETERS MINIMUM AND 75.00 MILLIMETERS MAXIMUM
HARDNESS RATING18.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLEHEXAGON
HEAD HEIGHT5.5 MILLIMETERS NOMINAL
MATERIALSTEEL PROPERTY CLASS 8.8 OVERALL
NOMINAL THREAD DIAMETER8.0 MILLIMETERS
SURFACE TREATMENTZINC OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH22.0 MILLIMETERS NOMINAL
THREAD PITCH IN MILLIMETERS1.25
THREAD SERIES DESIGNATORM
WIDTH BETWEEN FLATS11.0 MILLIMETERS NOMINAL


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