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National Stock Number:
5306-01-044-3011
Federal Supply Class:
5306
National Item Identification Number:
010443011
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:
| 74328-5D17 | 56878 | SPS TECHNOLOGIES, LLC | | 74328-5D17 | 80539 | SPS TECHNOLOGIES, LLC | | AIC752-5D17 | 06725 | SPS TECHNOLOGIES, LLC | | BM3326-5D17 | 17446 | HUCK INTERNATIONAL, INC | | GS1030-5D17 | 1EM77 | B & B SPECIALTIES INC | | BM3326-5D17 | 97928 | HUCK INTL INC | | ST3M571-5D17 | 0JV78 | J M PRECISION INC | | ST3M571-5D17 | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | S371-5D17 | 17446 | HUCK INTERNATIONAL, INC | | PBF23T-5PD17 | 27624 | SPS TECHNOLOGIES LLC | | S11-1059-5D17 | 57928 | SONIC INDUSTRIES, INC. | | MB84-5D17 | 73197 | HI-SHEAR CORPORATION | | S371-5D17 | 97928 | HUCK INTL INC | | MB84-5D17 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | VAL23033-5D17 | 06710 | VALLEY-TODECO, INC. | | VS3060-5D17 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M571-5D17 | 27624 | SPS TECHNOLOGIES LLC | | ST3M571-5D17 | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | ST3M571-5D17 | 76301 | THE BOEING COMPANY | | ST3M571-5D17 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | VS3060-5D17 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.390 INCHES MINIMUM AND 1.430 INCHES MAXIMUM FIRST HOLE | | EXTENDED WASHER THICKNESS | 0.072 INCHES MINIMUM AND 0.092 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.521 INCHES MINIMUM AND 0.531 INCHES MAXIMUM | | FASTENER LENGTH | 1.598 INCHES MINIMUM AND 1.628 INCHES MAXIMUM | | GRIP LENGTH | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM | | HEAD HEIGHT | 0.338 INCHES MINIMUM AND 0.358 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | MATERIAL | STEEL COMP XM-13 OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND 0.081 INCHES MAXIMUM FIRST HOLE | | SPECIFICATION/STANDARD DATA | 76301-ST3-571 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD | | WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.526 INCHES MINIMUM AND 0.576 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 24 |
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