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National Stock Number:
5306-01-419-1362
Federal Supply Class:
5306
National Item Identification Number:
014191362
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.
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Manufacturer Information:
| S4928913-10-46 | 06725 | SPS TECHNOLOGIES, LLC | | S4928913-10-46 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | S4928913-10-46 | 0K620 | SEQUENCE SUPPORT SERVICES INC | | S4928913-10-46 | 17446 | HUCK INTERNATIONAL, INC | | S4928913-10-46 | 27624 | SPS TECHNOLOGIES LLC | | S4928913-10-46 | 50945 | MERCURY AEROSPACE FASTENERS INC | | S4928913-10-46 | 56878 | SPS TECHNOLOGIES, LLC | | S4928913-10-46 | 88277 | THE BOEING COMPANY | | S4938913-10-46 | 97928 | HUCK INTL INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.625 INCHES | | THREAD QUANTITY PER INCH | 18 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.543 INCHES NOMINAL | | FASTENER LENGTH | 3.403 INCHES MINIMUM AND | | 3.433 INCHES MAXIMUM | | MATERIAL | STEEL COMP 4140 OR | | STEEL COMP 4340 OR | | STEEL COMP 8735 OR | | STEEL COMP 8740 OR | | STEEL COMP 6150 OVERALL | | SURFACE TREATMENT | CADMIUM HEAD | | CHROMIUM PRIMARY WASHER | | CHROMIUM GRIP | | CADMIUM THREADS | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND | | 40.0 ROCKWELL C MAXIMUM OVERALL | | HEAD STYLE | DISHED HEXAGON | | HEAD HEIGHT | 0.312 INCHES MINIMUM AND | | 0.327 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.928 INCHES MINIMUM AND | | 0.940 INCHES MAXIMUM | | GRIP LENGTH | 2.865 INCHES MINIMUM AND | | 2.885 INCHES MAXIMUM | | GRIP DIAMETER | 0.6230 INCHES MINIMUM AND | | 0.6240 INCHES MAXIMUM | | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD | | 63.0 MICROINCHES GRIP | | 32.0 MICROINCHES THREADS | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.294 INCHES NOMINAL THREADS | | SHANK UNTHREADED HOLE DIAMETER | 0.141 INCHES MINIMUM AND | | 0.151 INCHES MAXIMUM THREADS |
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