5305-00-206-9851 SCREW,EXTERNALLY RELIEVED BODY Index 5305-00-206-9866 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-206-9861

Federal Supply Class:
5305

National Item Identification Number:
002069861

Description:
SCREW,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 undercut for thread relief). It is No. 0 (0.060 IN.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below No. 10 (0.190 IN.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also BOLT, EXTERNALLY RELIEVED BODY and BOLT, INTERNAL WRENCHING.


Manufacturer Information:
30248756232LOCKHEED MARTIN CORPORATION


Techincal Specification:
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.312 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
FASTENER LENGTH0.500 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD0.097 INCHES NOMINAL
HARDNESS RATING82.6 ROCKWELL B NOMINAL OVERALL
HEAD DIAMETER0.312 INCHES NOMINAL
HEAD HEIGHT0.188 INCHES NOMINAL
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLESLOT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
MINIMUM YIELD STRENGTH22000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.138 INCHES
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.187 INCHES MINIMUM
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNC


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