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National Stock Number:
5306-01-107-7239
Federal Supply Class:
5306
National Item Identification Number:
011077239
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:
| 74328-5 | 56878 | SPS TECHNOLOGIES, LLC | | 74328-5 | 80539 | SPS TECHNOLOGIES, LLC | | BM3326-5H31 | 17446 | HUCK INTERNATIONAL, INC | | S371-5 | 17446 | HUCK INTERNATIONAL, INC | | GS1030-5H31 | 1EM77 | B & B SPECIALTIES INC | | BM3326-5H31 | 97928 | HUCK INTL INC | | ST3M571-5H31 | 06710 | VALLEY-TODECO, INC. | | ST3M571-5H31 | 0JV78 | J M PRECISION INC | | ST3M571-5H31 | 17446 | HUCK INTERNATIONAL, INC | | ST3M571-5H31 | 27624 | SPS TECHNOLOGIES LLC | | ST3M571-5H31 | 56878 | SPS TECHNOLOGIES, LLC | | ST3M571-5H31 | 57928 | SONIC INDUSTRIES, INC. | | ST3M571-5H31 | 73197 | HI-SHEAR CORPORATION | | S371-5 | 97928 | HUCK INTL INC | | VAL23033-5 | 06710 | VALLEY-TODECO, INC. | | VS3060-5 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M571-5H31 | 76301 | THE BOEING COMPANY | | ST3M571-5H31 | 80539 | SPS TECHNOLOGIES, LLC | | ST3M571-5H31 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | VS3060-5 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M571-5H31 | 97928 | HUCK INTL INC | | ST3M571-5H31 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.526 INCHES MINIMUM AND | | 0.576 INCHES MAXIMUM | | FASTENER LENGTH | 2.474 INCHES MINIMUM AND | | 2.504 INCHES MAXIMUM | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | 23M112,FSCM 08524,TYPE A MFR REF SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | HEAD HEIGHT | 0.338 INCHES MINIMUM AND | | 0.358 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND | | 0.376 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.521 INCHES MINIMUM AND | | 0.531 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.072 INCHES MINIMUM AND | | 0.092 INCHES MAXIMUM | | HOLE CONFIGURATION STYLE | DOUBLE HEXAGON LONGITUDINAL HOLE | | HOLE TYPE | DRILLED | | HOLE QUANTITY | 4 | | HOLE DIAMETER | 0.050 INCHES MINIMUM AND | | 0.060 INCHES MAXIMUM | | GRIP LENGTH | 1.928 INCHES MINIMUM AND | | 1.948 INCHES MAXIMUM | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND | | 0.3120 INCHES MAXIMUM |
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