6750-01-474-3218 CHEMICAL KIT,PHOTOGRAPHIC COLOR Index 4710-01-474-3220 TUBE ASSEMBLY,METAL

National Stock Number:
5305-01-474-3219

Federal Supply Class:
5305

National Item Identification Number:
014743219

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:
705-SS-2055566MATTHEW WARREN, INC
SM-A-744408-5980063US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR


Techincal Specification:
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
FASTENER LENGTH0.844 INCHES MINIMUM AND 1.156 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM
HEAD HEIGHT0.250 INCHES NOMINAL
HEAD DIAMETER0.469 INCHES MINIMUM AND 0.781 INCHES MAXIMUM
HEAD STYLEKNURLED NO. 2
INTERNAL DRIVE STYLESLOT
MATERIAL DOCUMENT AND CLASSIFICATIONASTMA-A-581 ASSN STD SINGLE MATERIAL RESPONSE OR ASTMA-A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES
POINT LENGTH0.110 INCHES MINIMUM AND 0.140 INCHES MAXIMUM
POINT STYLECONE
POINT CHAMFER ANGLE55.0 DEGREES MINIMUM AND 65.0 DEGREES MAXIMUM
POINT DIAMETER0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM
SURFACE TREATMENTPASSIVATE OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A
THREAD LENGTH0.235 INCHES MINIMUM AND 0.255 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH32


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