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National Stock Number: 5306-01-272-8070
Federal Supply Class: 5306
National Item Identification Number: 012728070
Description: BOLT,EXTERNALLY RELIEVED BODY
Detail: An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is No. 10 (0.190 IN.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, INTERNAL WRENCHING and THUMBSCREW. See also SCREW, EXTERNALLY RELIEVED BODY.
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Manufacturer Information:
68B410073-2005 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
THREAD SERIES DESIGNATOR | UNJF | NOMINAL THREAD DIAMETER | 0.500 INCHES | THREAD QUANTITY PER INCH | 24 | THREAD CLASS | 3A | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 0.427 INCHES MINIMUM AND | | 0.494 INCHES MAXIMUM | FASTENER LENGTH | 1.965 INCHES NOMINAL | MATERIAL | STEEL CORROSION RESISTING OVERALL | HEAD STYLE | DOUBLE HEXAGON | HEAD HEIGHT | 0.175 INCHES NOMINAL | WIDTH BETWEEN FLATS | 0.741 INCHES MINIMUM AND | | 0.752 INCHES MAXIMUM | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 | FIRST DIAMETER FROM HEAD | 0.445 INCHES MINIMUM AND | | 0.455 INCHES MAXIMUM | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.035 INCHES NOMINAL | SPECIAL FEATURES | HOLE THROUGH SHANK IN THREADED PORTION |
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