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National Stock Number:
5306-01-379-9652
Federal Supply Class:
5306
National Item Identification Number:
013799652
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:
| 11825-9-21 | 59563 | REID PRODUCTS INC. | | BM17019-9-21 | 17419 | DEUTSCH CO THE | | ST3M453-9-21 | 06710 | VALLEY-TODECO, INC. | | ST3M453-9-21 | 06725 | SPS TECHNOLOGIES, LLC | | ST3M453-9-21 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | GS1016-9-21 | 1EM77 | B & B SPECIALTIES INC | | ST3M453-9-21 | 27624 | SPS TECHNOLOGIES LLC | | ST3M453-9-21 | 56878 | SPS TECHNOLOGIES, LLC | | ST3M453-9-21 | 57928 | SONIC INDUSTRIES, INC. | | ST3M453-9-21 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | ST3M453-9-21 | 59764 | KENALOY PRODUCTS INC SUB MASCO CORP | | ST3M453-9-21 | 73197 | HI-SHEAR CORPORATION | | ST3M453-9-21 | 76301 | THE BOEING COMPANY | | ST3M453-9-21 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M453-9-21 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.563 INCHES | | THREAD QUANTITY PER INCH | 18 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.725 INCHES NOMINAL | | FASTENER LENGTH | 2.022 INCHES MINIMUM AND | | 2.069 INCHES MAXIMUM | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER | | HEAD HEIGHT | 0.318 INCHES MINIMUM AND | | 0.338 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.877 INCHES NOMINAL | | EXTENDED WASHER DIAMETER | 0.851 INCHES MINIMUM AND | | 0.891 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.016 INCHES NOMINAL | | GRIP LENGTH | 1.313 INCHES NOMINAL | | GRIP DIAMETER | 0.5610 INCHES MINIMUM AND | | 0.5615 INCHES MAXIMUM |
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