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National Stock Number:
5306-01-249-2793
Federal Supply Class:
5306
National Item Identification Number:
012492793
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:
| 11797A10026 | 59563 | REID PRODUCTS INC. | | 11797A10D026 | 59563 | REID PRODUCTS INC. | | AIC2263A10D026 | 06725 | SPS TECHNOLOGIES, LLC | | BM3200-10A026D | 17446 | HUCK INTERNATIONAL, INC | | PBF1041A10D026 | 27624 | SPS TECHNOLOGIES LLC | | BM3200-10A026D | 97928 | HUCK INTL INC | | VAL23611-10DS026 | 06710 | VALLEY-TODECO, INC. | | STSBG000A10D026 | 56878 | SPS TECHNOLOGIES, LLC | | STSBG000A10D026 | 80539 | SPS TECHNOLOGIES, LLC | | STSBG000A10D026 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | STSBG000A10D026 | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.625 INCHES | | THREAD QUANTITY PER INCH | 18 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.606 INCHES MINIMUM AND | | 0.673 INCHES MAXIMUM | | FASTENER LENGTH | 2.241 INCHES MINIMUM AND | | 2.288 INCHES MAXIMUM | | MATERIAL | STEEL COMP H11 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | STSBS000 CAGEC 98897 MFR REF SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | NICKEL AND | | CADMIUM AND | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | STSBS0000 CAGEC98897 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | MINIMUM TENSILE STRENGTH | 132000 POUNDS PER SQUARE INCH | | HEAD STYLE | DOUBLE HEXAGON | | HEAD HEIGHT | 0.340 INCHES MINIMUM AND | | 0.360 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.928 INCHES MINIMUM AND | | 0.940 INCHES MAXIMUM | | GRIP LENGTH | 1.615 INCHES MINIMUM AND | | 1.635 INCHES MAXIMUM | | GRIP DIAMETER | 0.623 INCHES MINIMUM AND | | 0.624 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | 32.0 MICROINCHES GRIP | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.122 INCHES MINIMUM AND | | 2.154 INCHES MAXIMUM FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.131 INCHES MINIMUM AND | | 0.151 INCHES MAXIMUM FIRST HOLE |
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