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National Stock Number:
5306-00-152-5509
Federal Supply Class:
5306
National Item Identification Number:
001525509
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:
| 11701A08D024 | 59563 | REID PRODUCTS INC. | | 68485-8-024 | 56878 | SPS TECHNOLOGIES, LLC | | 68485-8-024 | 80539 | SPS TECHNOLOGIES, LLC | | 95229-8-024 | 80539 | SPS TECHNOLOGIES, LLC | | AIC2264A08D024 | 06725 | SPS TECHNOLOGIES, LLC | | BM3210-8A024D | 17446 | HUCK INTERNATIONAL, INC | | BM3210-8A024D | 97928 | HUCK INTL INC | | PBF1042A8D024 | 27624 | SPS TECHNOLOGIES LLC | | STSBG001A08D024 | 1CNU4 | JOHN HASSALL LLC | | STSBG001A08D024 | 1EM77 | B & B SPECIALTIES INC | | STSBG001A08D024 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | STSBG001A08D024 | 56878 | SPS TECHNOLOGIES, LLC | | STSBG001A08D024 | 57928 | SONIC INDUSTRIES, INC. | | STSBG001A08D024 | 59563 | REID PRODUCTS INC. | | STSBG001A08D024 | 98897 | LOCKHEED MARTIN CORP | | VAL23602-8DS024 | 06710 | VALLEY-TODECO, INC. | | VS2979A08D024 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | VS2979A08D024 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.905 INCHES MINIMUM AND 1.937 INCHES MAXIMUM FIRST HOLE | | FASTENER LENGTH | 2.045 INCHES MINIMUM AND 2.092 INCHES MAXIMUM | | GRIP DIAMETER | 0.4985 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM | | GRIP LENGTH | 1.500 INCHES NOMINAL | | HEAD HEIGHT | 0.281 INCHES NOMINAL | | HEAD STYLE | DOUBLE HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | H-11 STSBS00119887 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 156000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES NOMINAL FIRST HOLE | | WIDTH BETWEEN FLATS | 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.545 INCHES MINIMUM AND 0.592 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNF |
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