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National Stock Number:
5306-01-023-2440
Federal Supply Class:
5306
National Item Identification Number:
010232440
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:
| 73992-5D32 | 56878 | SPS TECHNOLOGIES, LLC | | AIC244-5D32 | 06725 | SPS TECHNOLOGIES, LLC | | BM17028-5D32 | 17446 | HUCK INTERNATIONAL, INC | | AIC244-5D32 | 56878 | SPS TECHNOLOGIES, LLC | | MB13-5D32 | 73197 | HI-SHEAR CORPORATION | | BM17028-5D32 | 97928 | HUCK INTL INC | | VS3147-5D32 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | PBF1225-5D32 | 27624 | SPS TECHNOLOGIES LLC | | ST3M561-5D32 | 27624 | SPS TECHNOLOGIES LLC | | ST3M561-5D32 | 76301 | THE BOEING COMPANY | | ST3M561-5D32 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | MB13-5D32 | C4293 | ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH | | MB13-5D32 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | MB13-5D32 | R1120 | SATAIR A/S | | VS3147-5D32 | 12733 | VSI CORP SUB OF FAIRCHILD INDUSTRIES 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 | 0.325 INCHES MINIMUM AND | | 0.392 INCHES MAXIMUM | | FASTENER LENGTH | 2.335 INCHES MINIMUM AND | | 2.382 INCHES MAXIMUM | | MATERIAL | STEEL COMP 1016 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | HEAD STYLE | 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 | 1.990 INCHES MINIMUM AND | | 2.010 INCHES MAXIMUM | | GRIP DIAMETER | 0.3110 INCHES MINIMUM AND | | 0.3120 INCHES MAXIMUM | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.211 INCHES MINIMUM AND | | 2.268 INCHES MAXIMUM FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND | | 0.081 INCHES MAXIMUM FIRST HOLE | | SPECIFICATION/STANDARD DATA | 76301-ST3M561 MANUFACTURERS STANDARD |
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