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National Stock Number:
5306-01-256-4460
Federal Supply Class:
5306
National Item Identification Number:
012564460
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:
| 11933-5D12 | 59563 | REID PRODUCTS INC. | | MB145-5D12 | 73197 | HI-SHEAR CORPORATION | | ST3M729-5D12 | 06710 | VALLEY-TODECO, INC. | | ST3M729-5D12 | 06725 | SPS TECHNOLOGIES, LLC | | ST3M729-5D12 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | MB145-5D12 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | ST3M729-5D12 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | ST3M729-5D12 | 17446 | HUCK INTERNATIONAL, INC | | ST3M729-5D12 | 1EM77 | B & B SPECIALTIES INC | | ST3M729-5D12 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | ST3M729-5D12 | 27624 | SPS TECHNOLOGIES LLC | | ST3M729-5D12 | 56878 | SPS TECHNOLOGIES, LLC | | ST3M729-5D12 | 57928 | SONIC INDUSTRIES, INC. | | ST3M729-5D12 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | WC729-5D12 | 60516 | WEST COAST AEROSPACE, INC. | | ST3M729-5D12 | 76301 | THE BOEING COMPANY | | ST3M729-5D12 | 80539 | SPS TECHNOLOGIES, LLC | | ST3M729-5D12 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M729-5D12 | 97928 | HUCK INTL INC |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.981 INCHES MINIMUM AND 1.048 INCHES MAXIMUM FIRST HOLE | | FASTENER LENGTH | 1.109 INCHES MINIMUM AND 1.156 INCHES MAXIMUM | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM | | GRIP LENGTH | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM | | HEAD HEIGHT | 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE | | WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.349 INCHES MINIMUM AND 0.740 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) | | THREAD QUANTITY PER INCH | 24 |
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