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National Stock Number:
5306-01-450-4887
Federal Supply Class:
5306
National Item Identification Number:
014504887
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:
| CA4500-0313 | 29372 | HOWMET GLOBAL FASTENING SYSTEMS INC. | | CA4500-0313 | K4F52 | FASTAVIA LTD |
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Techincal Specification:
| FASTENER LENGTH | 1.185 INCHES MINIMUM AND 1.205 INCHES MAXIMUM | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND 0.1894 INCHES MAXIMUM | | GRIP LENGTH | 0.812 INCHES MINIMUM AND 0.828 INCHES MAXIMUM | | HEAD HEIGHT | 0.158 INCHES MINIMUM AND 0.193 INCHES MAXIMUM | | HEAD STYLE | CROWNED HEXAGON | | MATERIAL | STEEL FASTENER | | MATERIAL | STEEL COMP 440C LOCKING FEATURE | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.263 INCHES MINIMUM AND 0.314 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNF |
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