5306-01-603-1948 BOLT,CLOSE TOLERANCE 5306-01-603-2566 BOLT,CLOSE TOLERANCE

National Stock Number:
5306-01-603-2389

Federal Supply Class:
5306

National Item Identification Number:
016032389

Description:
BOLT,CLOSE TOLERANCE

Detail:
An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.


Manufacturer Information:
NAS6606-51Y80205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
NAS6606-51Y81205THE BOEING COMPANY


Techincal Specification:
THREAD SERIES DESIGNATORUNJF
NOMINAL THREAD DIAMETER0.375 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.578 INCHES NOMINAL
FASTENER LENGTH3.751 INCHES MINIMUM AND
3.781 INCHES MAXIMUM
MATERIALSTEEL COMP 4140 OR
STEEL COMP 4340 OR
STEEL COMP 8740 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS6349 ASSN STD SINGLE MATERIAL RESPONSE OR
AMS6415 ASSN STD SINGLE MATERIAL RESPONSE OR
AMS6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS-QQ-P-416,TY II,CL 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
HEAD STYLEHEXAGON
HEAD HEIGHT0.188 INCHES MINIMUM AND
0.203 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.554 INCHES MINIMUM AND
0.564 INCHES MAXIMUM
GRIP LENGTH3.178 INCHES MINIMUM AND
3.198 INCHES MAXIMUM
GRIP DIAMETER0.4047 INCHES MINIMUM AND
0.4057 INCHES MAXIMUM
SPECIAL FEATURESITEM IS FOR REPAIR WORK ONLY
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT,TENSION,HEX HEAD,CLOSE TOLERANCE,ALLOY STEEL,160K


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