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National Stock Number:
5306-00-291-5245
Federal Supply Class:
5306
National Item Identification Number:
002915245
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:
| 11825-5-8 | 59563 | REID PRODUCTS INC. | | BM17019-5-8 | 17446 | HUCK INTERNATIONAL, INC | | ST3M453-5-8 | 06710 | VALLEY-TODECO, INC. | | ST3M453-5-8 | 06725 | SPS TECHNOLOGIES, LLC | | GS1016-5-8 | 1EM77 | B & B SPECIALTIES INC | | BM17019-5-8 | 97928 | HUCK INTL INC | | ST3M453-5-8 | 0UCY9 | M.S. AEROSPACE INC. | | ST3M453-5-8 | 27624 | SPS TECHNOLOGIES LLC | | ST3M453-5-8 | 56878 | SPS TECHNOLOGIES, LLC | | ST3M453-5-8 | 57928 | SONIC INDUSTRIES, INC. | | ST3M453-5-8 | 58845 | ABOUNDING SECURITY INC DIV OF MAA CORP | | ST3M453-5-8 | 59764 | KENALOY PRODUCTS INC SUB MASCO CORP | | ST3M453-5-8 | 73197 | HI-SHEAR CORPORATION | | ST3M453-5-8 | 76301 | THE BOEING COMPANY | | ST3M453-5-8 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M453-5-8 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.441 INCHES MINIMUM AND | | 0.508 INCHES MAXIMUM | | FASTENER LENGTH | 0.951 INCHES MINIMUM AND | | 0.998 INCHES MAXIMUM | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH | | HEAD STYLE | DOUBLE HEXAGON | | HEAD HEIGHT | 0.177 INCHES MINIMUM AND | | 0.197 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND | | 0.502 INCHES MAXIMUM | | GRIP LENGTH | 0.490 INCHES MINIMUM AND | | 0.510 INCHES MAXIMUM | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND | | 0.3120 INCHES MAXIMUM | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 76301 | | DESIGN CONTROL REFERENCE | ST3M453-5-8 |
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