5998-01-496-7803 CIRCUIT CARD ASSEMBLY Index 5305-01-496-7805 SCREW,CLOSE TOLERANCE

National Stock Number:
5306-01-496-7804

Federal Supply Class:
5306

National Item Identification Number:
014967804

Description:
BOLT,INTERNAL WRENCHING

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, No. 10 (0.190 IN.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also SCREW, CAP, SOCKET HEAD. Excludes SETSCREW; SCREW, SHOULDER; BOLT, SHOULDER; SCREW, EXTERNALLY RELIEVED BODY; BOLT, EXTERNALLY RELIEVED BODY; and SCREW, MACHINE.


Manufacturer Information:
NAS144A-1580205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER0.834 INCHES MINIMUM AND 0.854 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH0.938 INCHES NOMINAL
HEAD DIAMETER0.430 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
HEAD HEIGHT0.226 INCHES NOMINAL
HEAD STYLEBEVEL-CONICAL
INTERNAL DRIVE STYLEHEXAGON
MATERIALSTEEL COMP E4340 AND STEEL COMP 8740 AND STEEL COMP 6150 AND STEEL COMP 3140 AND STEEL COMP 3135 OVERALL
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.250 INCHES
SHANK UNTHREADED HOLE DIAMETER0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE
SPECIAL FEATURESDRILLED SHANK/SELF-LOCKING BOLT
WIDTH ACROSS FLATS0.219 INCHES MINIMUM AND 0.221 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TYPE 2 CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.475 INCHES MINIMUM AND 0.525 INCHES MAXIMUM
THREAD QUANTITY PER INCH28


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