5306-00-298-4872 BOLT,EXTERNALLY RELIEVED BODY Index 5306-00-298-4881 BOLT,U

National Stock Number:
5306-00-298-4874

Federal Supply Class:
5306

National Item Identification Number:
002984874

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.


Manufacturer Information:
2057D1150AHP5CURTISS-WRIGHT CONTROLS, INC.
2057D11515555CURTISS-WRIGHT CORP


Techincal Specification:
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER1.594 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER1.344 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.060 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY3
FASTENER LENGTH2.250 INCHES NOMINAL
FIRST DIAMETER FROM HEAD0.395 INCHES MINIMUM AND 0.405 INCHES MAXIMUM
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.219 INCHES NOMINAL
HEAD STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6320 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 8735 OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES
SECOND DIAMETER FROM HEAD0.437 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
THIRD DIAMETER FROM HEAD0.302 INCHES MINIMUM AND 0.310 INCHES MAXIMUM
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.656 INCHES MINIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH24
WIDTH BETWEEN FLATS0.553 INCHES MINIMUM AND 0.562 INCHES MAXIMUM


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