5306-00-003-4109 BOLT,CLOSE TOLERANCE Index 5306-00-003-4111 BOLT,CLOSE TOLERANCE

National Stock Number:
5306-00-003-4110

Federal Supply Class:
5306

National Item Identification Number:
000034110

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:
106467-8-5480539SPS TECHNOLOGIES, LLC
CA4510-8-5429372HOWMET GLOBAL FASTENING SYSTEMS INC.
MS27576-8-5480205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
MS27576-8-5496906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER3.901 INCHES MINIMUM AND 3.931 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH4.021 INCHES MINIMUM AND 4.021 INCHES MINIMUM AND 4.041 INCHES MAXIMUM4.041 INCHES MAXIMUM
GRIP DIAMETER0.4982 INCHES MINIMUM AND 0.4982 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM0.4991 INCHES MAXIMUM
GRIP LENGTH3.375 INCHES MINIMUM AND 3.391 INCHES MAXIMUM
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.251 INCHES MINIMUM AND 0.251 INCHES MINIMUM AND 0.266 INCHES MAXIMUM0.266 INCHES MAXIMUM
HEAD STYLEDISHED HEXAGONDISHED HEXAGON
MATERIALSTEEL COMP E4340 OR STEEL COMP 4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 4130 OR STEEL COMP 6150 OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES
SHANK UNTHREADED HOLE DIAMETER0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE
SPECIAL FEATURESDETENT RING IN SHANK
WIDTH BETWEEN FLATS0.741 INCHES MINIMUM AND 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM0.752 INCHES MAXIMUM
SURFACE FINISH63.0 MICROINCHES GRIP
SURFACE FINISH63.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THREAD CLASS3A3A
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
THREAD LENGTH0.401 INCHES MINIMUM AND 0.401 INCHES MINIMUM AND 0.546 INCHES MAXIMUM0.546 INCHES MAXIMUM
THREAD QUANTITY PER INCH20
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF)


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