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National Stock Number:
5306-00-926-5554
Federal Supply Class:
5306
National Item Identification Number:
009265554
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:
| 3M33-7-15 | 06710 | VALLEY-TODECO, INC. | | 3M33-7-15 | 06725 | SPS TECHNOLOGIES, LLC | | 3M33-7-15 | 17446 | HUCK INTERNATIONAL, INC | | 3M33-7-15 | 27624 | SPS TECHNOLOGIES LLC | | 3M33-7-15 | 76301 | THE BOEING COMPANY | | 3M33-7-15 | 80539 | SPS TECHNOLOGIES, LLC | | 3M33-7-15 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.437 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.656 INCHES MAXIMUM | | FASTENER LENGTH | 1.578 INCHES MINIMUM AND | | 1.625 INCHES MAXIMUM | | MATERIAL | IRON ALLOY 660 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | HEAD STYLE | HEXAGON | | HEAD HEIGHT | 0.234 INCHES MINIMUM AND | | 0.266 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.615 INCHES MINIMUM AND | | 0.627 INCHES MAXIMUM | | HOLE CONFIGURATION STYLE | HEXAGON FLATS | | HOLE TYPE | DRILLED | | HOLE QUANTITY | 1 | | HOLE DIAMETER | 0.070 INCHES NOMINAL | | GRIP LENGTH | 0.928 INCHES MINIMUM AND | | 0.948 INCHES MAXIMUM | | GRIP DIAMETER | 0.4362 INCHES MINIMUM AND | | 0.4367 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.306 INCHES MINIMUM AND | | 1.338 INCHES MAXIMUM FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM AND | | 0.111 INCHES MAXIMUM FIRST HOLE | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 76301 | | DESIGN CONTROL REFERENCE | 3M33-7-15 |
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