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National Stock Number:
5306-01-419-1363
Federal Supply Class:
5306
National Item Identification Number:
014191363
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:
| S4928913-8-24 | 06725 | SPS TECHNOLOGIES, LLC | | S4928913-8-24 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | S4928913-8-24 | 0K620 | SEQUENCE SUPPORT SERVICES INC | | S4928913-8-24 | 17446 | HUCK INTERNATIONAL, INC | | S4928913-8-24 | 27624 | SPS TECHNOLOGIES LLC | | S4928913-8-24 | 50945 | MERCURY AEROSPACE FASTENERS INC | | S4928913-8-24 | 56878 | SPS TECHNOLOGIES, LLC | | S4928913-8-24 | 88277 | THE BOEING COMPANY | | S4928913-8-24 | 97928 | HUCK INTL INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.453 INCHES NOMINAL | | FASTENER LENGTH | 1.938 INCHES MINIMUM AND | | 1.968 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 | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DPS 9.74, TYPE 1 MFR REF SINGLE TREATMENT RESPONSE HEAD | | DPS 9.84, TYPE 1 MFR REF SINGLE TREATMENT RESPONSE PRIMARY WASHER | | DPA 9.84K, TYPE 1 MFR REF SINGLE TREATMENT RESPONSE GRIP | | DPS9.74, TYPE 1 MFR REF SINGLE TREATMENT RESPONSE THREADS | | HEAD STYLE | DISHED HEXAGON | | HEAD HEIGHT | 0.250 INCHES MINIMUM AND | | 0.265 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.741 INCHES MINIMUM AND | | 0.752 INCHES MAXIMUM | | GRIP LENGTH | 1.490 INCHES MINIMUM AND | | 1.510 INCHES MAXIMUM | | GRIP DIAMETER | 0.4982 INCHES MINIMUM AND | | 0.4991 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 | 1.830 INCHES NOMINAL THREADS | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM AND | | 0.116 INCHES MAXIMUM THREADS | | SPECIAL FEATURES | TWO HOLES IN THREADS 90 DEGREES APART |
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