5999-01-284-5239 PRINTED WIRING BOARD Index 5305-01-284-5241 SCREW,MACHINE

National Stock Number:
5305-01-284-5240

Federal Supply Class:
5305

National Item Identification Number:
012845240

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:
10032680-10194580HONEYWELL INTERNATIONAL INC.


Techincal Specification:
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.040 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER0.175 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER0.100 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER0.185 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY4
FASTENER LENGTH0.175 INCHES NOMINAL
FIRST DIAMETER FROM HEAD0.170 INCHES NOMINAL
FOURTH DIAMETER FROM HEAD0.100 INCHES NOMINAL
HEAD HEIGHT0.045 INCHES NOMINAL
HEAD DIAMETER0.344 INCHES NOMINAL
HEAD STYLEFILLISTER
INTERNAL DRIVE STYLESLOT
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
NOMINAL THREAD DIAMETER0.216 INCHES
SECOND DIAMETER FROM HEAD0.216 INCHES NOMINAL
SURFACE TREATMENTPASSIVATE OVERALL
THIRD DIAMETER FROM HEAD0.047 INCHES NOMINAL
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH28


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