5305-00-206-9841 SETSCREW Index 1560-00-206-9847 BRACKET,RH

National Stock Number:
5305-00-206-9844

Federal Supply Class:
5305

National Item Identification Number:
002069844

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:
7424957712TELEMECHANICS INC
7424964959AMERICAN TELEPHONE AND TELEGRAPH CO
7424970408AT AND T CORP


Techincal Specification:
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.031 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
FASTENER LENGTH0.391 INCHES NOMINAL
FEATURES PROVIDEDCASEHARDENED
FIRST DIAMETER FROM HEAD0.214 INCHES NOMINAL
HEAD DIAMETER0.344 INCHES NOMINAL
HEAD HEIGHT0.094 INCHES NOMINAL
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
SPECIAL FEATURESUNTHREADED PORTION BEYOND END OPPOSITE HEAD MACHINED TO 0.187 INCHES DIAMETER AND 0.172 INCHES LENGTH NOT PLATED
SURFACE TREATMENTCHROMATE ZINC OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.188 INCHES MINIMUM
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNEF


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