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National Stock Number:
5306-01-418-5131
Federal Supply Class:
5306
National Item Identification Number:
014185131
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:
| S4928913-12-48 | 06725 | SPS TECHNOLOGIES, LLC | | S4928913-12-48 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | S4928913-12-48 | 17446 | HUCK INTERNATIONAL, INC | | S4928913-12-48 | 27674 | ACUITY SPECIALTY PRODUCTS, INC | | S4928913-12-48 | 50945 | MERCURY AEROSPACE FASTENERS INC | | S4928913-12-48 | 88277 | THE BOEING COMPANY | | S4928913-12-48 | 96878 | SEAMAN H P CO | | S4928913-12-48 | 97928 | HUCK INTL INC |
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Techincal Specification:
| FASTENER LENGTH | 1.572 INCHES NOMINAL | | GRIP DIAMETER | 0.747 INCHES MINIMUM AND 0.748 INCHES MAXIMUM | | GRIP LENGTH | 1.000 INCHES NOMINAL | | HEAD HEIGHT | 0.375 INCHES NOMINAL | | HEAD STYLE | HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL OR MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL OR AMS6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 4340 OVERALL OR STEEL COMP 8740 OVERALL | | PROPRIETARY CHARACTERISTICS | PACS | | NOMINAL THREAD DIAMETER | 0.750 INCHES | | SPECIAL FEATURES | COTTERPIN HOLE | | WIDTH BETWEEN FLATS | 1.052 INCHES MINIMUM AND 1.064 INCHES MAXIMUM | | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 125.0 MICROINCHES OVERALL | | SURFACE FINISH | 32.0 MICROINCHES HEAD | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.572 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 16 | | THREAD SERIES DESIGNATOR | UNJF |
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