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National Stock Number:
5306-01-076-3168
Federal Supply Class:
5306
National Item Identification Number:
010763168
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:
| MB145-10D55 | 73197 | HI-SHEAR CORPORATION | | MB145-10D55 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | ST3M729-10D55 | 06710 | VALLEY-TODECO, INC. | | ST3M729-10D55 | 06725 | SPS TECHNOLOGIES, LLC | | ST3M729-10D55 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M729-10D55 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | ST3M729-10D55 | 17446 | HUCK INTERNATIONAL, INC | | ST3M729-10D55 | 1EM77 | B & B SPECIALTIES INC | | ST3M729-10D55 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | ST3M729-10D55 | 27624 | SPS TECHNOLOGIES LLC | | ST3M729-10D55 | 56878 | SPS TECHNOLOGIES, LLC | | ST3M729-10D55 | 57928 | SONIC INDUSTRIES, INC. | | ST3M729-10D55 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | ST3M729-10D55 | 59563 | REID PRODUCTS INC. | | ST3M729-10D55 | 60516 | WEST COAST AEROSPACE, INC. | | ST3M729-10D55 | 76301 | THE BOEING COMPANY | | ST3M729-10D55 | 80539 | SPS TECHNOLOGIES, LLC | | ST3M729-10D55 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M729-10D55 | 97928 | HUCK INTL INC |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.831 INCHES MINIMUM AND 3.898 INCHES MAXIMUM FIRST HOLE | | FASTENER LENGTH | 3.965 INCHES MINIMUM AND 4.012 INCHES MAXIMUM | | GRIP DIAMETER | 0.6235 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM | | GRIP LENGTH | 3.428 INCHES MINIMUM AND 3.448 INCHES MAXIMUM | | HEAD HEIGHT | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | 23-112,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | NOMINAL THREAD DIAMETER | 0.625 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM FIRST HOLE | | SPECIFICATION/STANDARD DATA | 76301-ST3-729 MANUFACTURERS STANDARD | | WIDTH BETWEEN FLATS | 0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.517 INCHES MINIMUM AND 0.584 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 18 | | THREAD SERIES DESIGNATOR | UNJF |
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