5306-00-579-1948 BOLT,EXTERNALLY RELIEVED BODY Index 5305-00-579-1956 SCREW,MACHINE

National Stock Number:
5306-00-579-1949

Federal Supply Class:
5306

National Item Identification Number:
005791949

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:
31185356878SPS TECHNOLOGIES, LLC
31185377445RTX CORPORATION


Techincal Specification:
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.252 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
EXTENDED WASHER DIAMETER0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
EXTENDED WASHER THICKNESS0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
FASTENER LENGTH1.180 INCHES MINIMUM AND 1.200 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
HEAD STYLEDOUBLE HEXAGON EXTENDED WASHER
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 601 OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES
NONSTANDARD THREAD PITCH DIAMETER+0.2797 TO 0.2824 INCHES
WIDTH BETWEEN FLATS0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM
SURFACE TREATMENTNICKEL AND CADMIUM OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.888 INCHES MINIMUM AND 0.928 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH24


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