5305-00-832-4478 SCREW,CAP,SOCKET HEAD Index 5360-00-832-4486 SPRING,HELICAL,EXTENSION

National Stock Number:
5305-00-832-4484

Federal Supply Class:
5305

National Item Identification Number:
008324484

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:
SMB54055880063US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR


Techincal Specification:
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
FASTENER LENGTH0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD0.085 INCHES MINIMUM AND 0.090 INCHES MAXIMUM
HEAD HEIGHT0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM
HEAD DIAMETER0.325 INCHES MINIMUM AND 0.345 INCHES MAXIMUM
HEAD STYLEBINDING
INTERNAL DRIVE STYLESLOT
MATERIAL DOCUMENT AND CLASSIFICATION66,COMP 18-8 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER0.164 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD LENGTH0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)


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