4810-01-221-3148 CAP,VALVE Index 5305-01-221-3150 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5306-01-221-3149

Federal Supply Class:
5306

National Item Identification Number:
012213149

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:
74D111103-208376301THE BOEING COMPANY


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER1.813 INCHES NOMINAL FIRST HOLE
EXTENDED WASHER DIAMETER0.470 INCHES NOMINAL
EXTENDED WASHER THICKNESS0.015 INCHES MINIMUM AND 0.025 INCHES MAXIMUM
FASTENER LENGTH3.516 INCHES MINIMUM AND 3.546 INCHES MAXIMUM
FEATURES PROVIDEDFINISHED HEAD
HEAD HEIGHT0.156 INCHES NOMINAL
HEAD STYLEHEXAGON EXTENDED WASHER
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-530 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALCOPPER ALLOY 172 OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES
SHANK UNTHREADED HOLE DIAMETER0.062 INCHES MINIMUM AND 0.065 INCHES MAXIMUM FIRST HOLE
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.830 INCHES NOMINAL
THREAD QUANTITY PER INCH24
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF)
WIDTH BETWEEN FLATS0.496 INCHES MINIMUM AND 0.504 INCHES MAXIMUM


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