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National Stock Number:
5306-00-469-1975
Federal Supply Class:
5306
National Item Identification Number:
004691975
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:
| 99-9415895 | 99995 | NATO STOCK NUMBER ASSIGNED BY ANOTHER NATION | | A111-9G | 0U583 | SAE INTERNATIONAL | | A111-9G | K7766 | BRITISH STANDARDS INSTITUTION | | A111-9G | U1653 | SOCIETY OF BRITISH AEROSPACE COMPANI LTD SBAC |
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Techincal Specification:
| FASTENER LENGTH | 1.550 INCHES MINIMUM AND 1.590 INCHES MAXIMUM | | GRIP DIAMETER | 0.3118 INCHES MINIMUM AND 0.3123 INCHES MAXIMUM | | GRIP LENGTH | 0.983 INCHES MINIMUM AND 1.013 INCHES MAXIMUM | | HEAD HEIGHT | 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | SPECIAL FEATURES | EXTENDED DIA 0.490 IN. W,0.030 IN. H ON TOP OF HEAD | | WIDTH BETWEEN FLATS | 0.493 INCHES MINIMUM AND 0.500 INCHES MAXIMUM | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.537 INCHES MINIMUM AND 0.607 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNF | | THREAD QUANTITY PER INCH | 24 |
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