5305-00-568-8591 THUMBSCREW Index 5305-00-568-8593 SETSCREW

National Stock Number:
5305-00-568-8592

Federal Supply Class:
5305

National Item Identification Number:
005688592

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:
802285518876U S ARMY AVIATION AND MISSILE COMMAND


Techincal Specification:
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.398 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
FASTENER LENGTH0.648 INCHES NOMINAL
FIRST DIAMETER FROM HEAD0.105 INCHES MINIMUM AND 0.110 INCHES MAXIMUM
HEAD DIAMETER0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
HEAD HEIGHT0.180 INCHES NOMINAL
HEAD STYLEROUND
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
MATERIALSTEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1035 OR STEEL COMP 1040 OR STEEL COMP 1042 OR STEEL COMP 1045 OR STEEL COMP 1046 OR STEEL COMP 1548 OR STEEL COMP 1049 OR STEEL COMP 1050 OR STEEL COMP 1017 OR STEEL COMP 1023 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1536 OR STEEL COMP 1037 OR STEEL COMP 1038 OR STEEL COMP 1541 OR STEEL COMP 1043 OR STEEL COMP 1060 OR STEEL COMP 1080 OR STEEL COMP 1090 OR STEEL COMP 1095 OVERALL
NOMINAL THREAD DIAMETER0.164 INCHES
SURFACE TREATMENTZINC OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A
THREAD LENGTH0.203 INCHES MINIMUM
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNC


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