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National Stock Number:
5306-01-235-3163
Federal Supply Class:
5306
National Item Identification Number:
012353163
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:
| 11797A08D026 | 59563 | REID PRODUCTS INC. | | 68484-8-26 | 56878 | SPS TECHNOLOGIES, LLC | | AIC2263A08D026 | 06725 | SPS TECHNOLOGIES, LLC | | BM3200-8A026D | 17446 | HUCK INTERNATIONAL, INC | | BM3200-8A026D | 97928 | HUCK INTL INC | | PBF1041A8D026 | 27624 | SPS TECHNOLOGIES LLC | | STSBG000A08D026 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | STSBG000A08D026 | 98897 | LOCKHEED MARTIN CORP | | VAL23611-8DS026 | 06710 | VALLEY-TODECO, INC. | | VS2978A08D026 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | VS2978A08D026 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.985 INCHES MINIMUM AND 2.017 INCHES MAXIMUM FIRST HOLE | | FASTENER LENGTH | 2.125 INCHES MINIMUM AND 2.172 INCHES MAXIMUM | | GRIP DIAMETER | 0.4985 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM | | GRIP LENGTH | 1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM | | HEAD HEIGHT | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | H-11 STSBS000 FSCM 98897 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 132000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE | | SPECIAL FEATURES | CETYL ALCOHOL LUB | | 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 DOCUMENT AND CLASSIFICATION | STSBS000 FSCM 98897 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | NICKEL AND CADMIUM AND CHROMATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.490 INCHES MINIMUM AND 0.557 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNJF |
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