5306-01-307-2313 BOLT,CLOSE TOLERANCE Index 5306-01-307-2315 BOLT,CLOSE TOLERANCE

National Stock Number:
5306-01-307-2314

Federal Supply Class:
5306

National Item Identification Number:
013072314

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:
121673-4-3980539SPS TECHNOLOGIES, LLC
ST3M735-4-3976301THE BOEING COMPANY


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER2.787 INCHES NOMINAL FIRST HOLE
FASTENER LENGTH2.856 INCHES MINIMUM AND 2.876 INCHES MAXIMUM
GRIP DIAMETER0.249 INCHES NOMINAL
GRIP LENGTH2.438 INCHES MINIMUM AND 2.454 INCHES MAXIMUM
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM
HEAD STYLEHEXAGON
HOLE CONFIGURATION STYLEHEXAGON CORNERS
HOLE DIAMETER0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM
HOLE QUANTITY3
HOLE TYPEDRILLED
LOCKING FEATURESLOTTED RING
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5643 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5673 ASSN STD SINGLE MATERIAL RESPONSE RING
MATERIALSTEEL COMP 630 OR STEEL COMP 631 RING
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
SHANK UNTHREADED HOLE DIAMETER0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE
WIDTH BETWEEN FLATS0.434 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE RING
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
SURFACE TREATMENTPASSIVATE RING
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A
THREAD LENGTH0.308 INCHES NOMINAL
THREAD SERIES DESIGNATORUNJF
THREAD QUANTITY PER INCH28


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