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National Stock Number:
5306-01-576-4023
Federal Supply Class:
5306
National Item Identification Number:
015764023
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:
| 11831-9D71 | 59563 | REID PRODUCTS INC. | | ST3M571-9D71 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 0.928 NOMINAL MILS AND 0.938 NOMINAL CENTIMETERS | | EXTENDED WASHER THICKNESS | 0.123 INCHES MINIMUM AND 0.143 INCHES MAXIMUM | | FASTENER LENGTH | 5.2865 INCHES NOMINAL | | GRIP DIAMETER | 0.5610 NOMINAL MILS AND 0.5615 NOMINAL CENTIMETERS | | GRIP LENGTH | 4.4375 NOMINAL INCHES | | HEAD HEIGHT | 0.547 INCHES MINIMUM AND 0.567 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | HOLE DIAMETER | 0.410 INCHES MINIMUM AND 0.450 INCHES MAXIMUM | | HOLE QUANTITY | 1 | | HOLE TYPE | DRILLED | | NOMINAL THREAD DIAMETER | 0.562 INCHES | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-P-35 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | THREAD QUANTITY PER INCH | 18 | | THREAD SERIES DESIGNATOR | UNJF | | WIDTH BETWEEN FLATS | 0.703 NOMINAL INCHES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-5629 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.849 INCHES NOMINAL |
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