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National Stock Number:
5306-01-068-1306
Federal Supply Class:
5306
National Item Identification Number:
010681306
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:
| BACB30NE7-15 | 06710 | VALLEY-TODECO, INC. | | BACB30NE7-15 | 06725 | SPS TECHNOLOGIES, LLC | | BACB30NE7-15 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BACB30NE7-15 | 17943 | FEDERAL MANUFACTURING CORP | | BACB30NE7-15 | 56878 | SPS TECHNOLOGIES, LLC | | BACB30NE7-15 | 80539 | SPS TECHNOLOGIES, LLC | | BACB30NE7-15 | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| FASTENER LENGTH | 1.617 INCHES MINIMUM AND 1.647 INCHES MAXIMUM | | GRIP DIAMETER | 0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM | | GRIP LENGTH | 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM | | HEAD HEIGHT | 0.219 INCHES MINIMUM AND 0.234 INCHES MAXIMUM | | HEAD STYLE | UNDERCUT HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MILL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6300 ASSN STD 3RD MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 4340 OR STEEL COMP 8740 OR STEEL COMP 4037 OVERALL | | NOMINAL THREAD DIAMETER | 0.438 INCHES | | WIDTH BETWEEN FLATS | 0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.669 INCHES MINIMUM AND 0.719 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNF | | THREAD QUANTITY PER INCH | 20 |
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