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National Stock Number:
5306-01-324-6713
Federal Supply Class:
5306
National Item Identification Number:
013246713
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:
| 75A110061-2003 | 2V343 | APEX MANUFACTURING COMPANY, INC. | | 75A110061-2003 | 6Z056 | CM MANUFACTURING INC | | 75A110061-2003 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.438 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.770 INCHES NOMINAL | | FASTENER LENGTH | 2.080 INCHES MINIMUM AND | | 2.120 INCHES MAXIMUM | | MATERIAL | STEEL UNS K23080 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6411 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | PS13102 CL B,CAGEC 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | HARDNESS RATING | 46.0 ROCKWELL C MINIMUM AND | | 48.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH | | HEAD STYLE | HEXAGON | | HEAD HEIGHT | 0.300 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 0.742 INCHES MINIMUM AND | | 0.752 INCHES MAXIMUM | | GRIP LENGTH | 1.330 INCHES NOMINAL | | GRIP DIAMETER | 0.4985 INCHES MINIMUM AND | | 0.4995 INCHES MAXIMUM | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.833 INCHES NOMINAL FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM AND | | 0.116 INCHES MAXIMUM FIRST HOLE |
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