5306-00-637-0386 BOLT,EXTERNALLY RELIEVED BODY Index 5305-00-637-0389 SETSCREW

National Stock Number:
5306-00-637-0388

Federal Supply Class:
5306

National Item Identification Number:
006370388

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:
760931419200US ARMY ARDEC RDECOM
BL72297664959AMERICAN TELEPHONE AND TELEGRAPH CO
BL72297670408AT AND T CORP


Techincal Specification:
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER1.062 INCHES NOMINAL
EXTENDED WASHER DIAMETER0.750 INCHES NOMINAL
EXTENDED WASHER THICKNESS0.125 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
FASTENER LENGTH1.750 INCHES NOMINAL
FIRST DIAMETER FROM HEAD0.266 INCHES NOMINAL
HEAD HEIGHT0.750 INCHES NOMINAL
HEAD STYLESQUARE EXTENDED WASHER
MATERIALSTEEL COMP 1117 OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES
WIDTH BETWEEN FLATS0.497 INCHES MINIMUM AND 0.502 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION3064 FSCM 54567 MFR REF 1ST TREATMENT RESPONSE OR 3066 FSCM 54567 MFR REF 2ND TREATMENT RESPONSE OVERALL
SURFACE TREATMENTZINC OR PHOSPHATE OVERALL
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.688 INCHES MINIMUM
THREAD QUANTITY PER INCH16
THREAD SERIES DESIGNATORUNC


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