5306-00-693-6661 BOLT,INTERNALLY RELIEVED BODY Index 5305-00-693-6668 SCREW,MACHINE

National Stock Number:
5306-00-693-6666

Federal Supply Class:
5306

National Item Identification Number:
006936666

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:
76206698897LOCKHEED MARTIN CORP


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER1.244 INCHES MINIMUM AND 1.274 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH1.410 INCHES MINIMUM AND 1.440 INCHES MAXIMUM
FEATURES PROVIDEDFINISHED HEAD
GRIP LENGTH1.050 INCHES NOMINAL
HEAD HEIGHT0.140 INCHES MINIMUM AND 0.170 INCHES MAXIMUM
HEAD STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6050,F4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 8630 OVERALL
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.312 INCHES
SHANK UNTHREADED HOLE DIAMETER0.077 INCHES MINIMUM AND 0.082 INCHES MAXIMUM FIRST HOLE
SPECIAL FEATURESWITH GROOVE UNDER HEAD 0.290 IN. DIA 0.090 IN. W AND 0.3118 IN. MIN 0.3119 IN. MAX GRIP DIA
WIDTH BETWEEN FLATS0.500 INCHES NOMINAL
SURFACE FINISH100.0 MICROINCHES GRIP
SURFACE TREATMENTCHROMIUM GRIP
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.300 INCHES MINIMUM AND 0.330 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH24


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