5306-00-638-1562 BOLT,MACHINE Index 5305-00-638-1568 SCREW,MACHINE

National Stock Number:
5306-00-638-1566

Federal Supply Class:
5306

National Item Identification Number:
006381566

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:
10114345A486GNIMIKKEISTOKESKUS NCB FINLAND
NAS428K4-1080205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
NAS428K4A1080205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH1.000 INCHES NOMINAL
MATERIALSTEEL COMP 4037 OR
STEEL COMP 4130 OR
STEEL COMP 8630 OR
STEEL COMP 8735 OR
STEEL COMP 8740 OR
STEEL COMP 4140 OVERALL
THREAD LENGTH0.938 INCHES MINIMUM AND
0.969 INCHES MAXIMUM
HEAD STYLECROWNED HEXAGON
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-6812 MIL SPEC ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENTCADMIUM AND
CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND
32.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH
HEAD HEIGHT0.141 INCHES NOMINAL
WIDTH BETWEEN FLATS0.438 INCHES NOMINAL
GRIP LENGTH0.031 INCHES MINIMUM AND
0.062 INCHES MAXIMUM
FEATURES PROVIDEDFINISHED HEAD
SPECIAL FEATURESSUPPLIED W/SLOT IN END OF SHANK


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