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National Stock Number:
5306-01-520-8719
Federal Supply Class:
5306
National Item Identification Number:
015208719
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:
| BACB30US6K21 | 06710 | VALLEY-TODECO, INC. | | BACB30US6K21 | 06725 | SPS TECHNOLOGIES, LLC | | BACB30US6K21 | 16258 | SPACE-LOK, INC. | | BACB30US6K21 | 17943 | FEDERAL MANUFACTURING CORP | | BACB30US6K21 | 1RC86 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BACB30US6K21 | 27624 | SPS TECHNOLOGIES LLC | | BACB30US6K21 | 56878 | SPS TECHNOLOGIES, LLC | | BACB30US6K21 | 57928 | SONIC INDUSTRIES, INC. | | BACB30US6K21 | 81205 | THE BOEING COMPANY | | BACB30US6K21 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| COLOR | BLACK THREADS | | EXTENDED WASHER DIAMETER | 0.490 INCHES MINIMUM AND 0.507 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.091 INCHES NOMINAL | | FASTENER LENGTH | 1.9555 INCHES NOMINAL | | GRIP DIAMETER | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM | | GRIP LENGTH | 1.3125 INCHES NOMINAL | | HEAD HEIGHT | 0.340 INCHES NOMINAL | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | HOLE CONFIGURATION STYLE | DOUBLE HEXAGON LONGITUDINAL HOLE | | HOLE DIAMETER | 0.260 INCHES NOMINAL | | HOLE QUANTITY | 1 | | HOLE TYPE | DRILLED | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5962 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY 718 OVERALL | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | WIDTH BETWEEN FLATS | 0.490 INCHES MINIMUM AND 0.507 INCHES MAXIMUM | | SURFACE TREATMENT | ALUMINUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.643 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF |
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