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National Stock Number:
5306-01-381-0891
Federal Supply Class:
5306
National Item Identification Number:
013810891
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:
| 120978-5-19 | 80539 | SPS TECHNOLOGIES, LLC | | 5306-002-5-19 | S7549 | AIDC/AEROSPACE INDUSTRIAL DEVELOPMENT CORP. | | AIC596-5-19 | 06725 | SPS TECHNOLOGIES, LLC | | H411-5-19 | 17446 | HUCK INTERNATIONAL, INC | | PBF7521-5-19 | 27624 | SPS TECHNOLOGIES LLC | | H411-5-19 | 97928 | HUCK INTL INC | | VCG0030-5-19 | 06710 | VALLEY-TODECO, INC. | | VS3133-5-19 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.3125 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.438 INCHES NOMINAL | | FASTENER LENGTH | 1.611 INCHES MINIMUM AND | | 1.641 INCHES MAXIMUM | | MATERIAL | STEEL COMP H11 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NAS 672 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | SPLINE DRIVE SHEAR HEAD | | HEAD HEIGHT | 0.187 INCHES NOMINAL | | HEAD MINOR DIAMETER | 0.605 INCHES NOMINAL | | GRIP LENGTH | 1.178 INCHES MINIMUM AND | | 1.198 INCHES MAXIMUM | | GRIP DIAMETER | 0.3108 INCHES MINIMUM AND | | 0.3117 INCHES MAXIMUM | | FEATURES PROVIDED | DRY FILM LUBRICANT |
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