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National Stock Number:
5306-01-027-1995
Federal Supply Class:
5306
National Item Identification Number:
010271995
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:
| 74328-3-9 | 56878 | SPS TECHNOLOGIES, LLC | | 74328-3-9 | 80539 | SPS TECHNOLOGIES, LLC | | AIC752-3-9 | 06725 | SPS TECHNOLOGIES, LLC | | BM3326-3-9 | 17446 | HUCK INTERNATIONAL, INC | | BM3326-3-9 | 97928 | HUCK INTL INC | | MB84-3-9 | 73197 | HI-SHEAR CORPORATION | | MB84-3-9 | C4293 | ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH | | MB84-3-9 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | MB84-3-9 | R1120 | SATAIR A/S | | S11-1059-3-9 | 57928 | SONIC INDUSTRIES, INC. | | S371-3-9 | 17446 | HUCK INTERNATIONAL, INC | | S371-3-9 | 97928 | HUCK INTL INC | | ST3M571-3-9 | 27624 | SPS TECHNOLOGIES LLC | | ST3M571-3-9 | 76301 | THE BOEING COMPANY | | VAL23033-3-9 | 06710 | VALLEY-TODECO, INC. | | VS3060-3-9 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | VS3060-3-9 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | VS3060-3-9 | C4293 | ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH |
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Techincal Specification:
| EXTENDED WASHER THICKNESS | 0.054 INCHES MINIMUM AND 0.074 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM | | FASTENER LENGTH | 0.946 INCHES MINIMUM AND 0.976 INCHES MAXIMUM | | GRIP DIAMETER | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM | | GRIP LENGTH | 0.562 INCHES NOMINAL | | HEAD HEIGHT | 0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | WIDTH BETWEEN FLATS | 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.337 INCHES MINIMUM AND 0.399 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNJF |
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