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National Stock Number:
5306-00-097-6883
Federal Supply Class:
5306
National Item Identification Number:
000976883
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:
| 106451-2 | 56878 | SPS TECHNOLOGIES, LLC | | 106451-2 | 80539 | SPS TECHNOLOGIES, LLC | | 6870348 | 73342 | ALLISON TRANSMISSION INC |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.938 INCHES NOMINAL FIRST HOLE | | FASTENER LENGTH | 1.055 INCHES NOMINAL | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND 0.1892 INCHES MAXIMUM | | GRIP LENGTH | 0.780 INCHES NOMINAL | | HEAD HEIGHT | 0.125 INCHES NOMINAL | | HEAD STYLE | HEXAGON | | LOCKING FEATURE | DETENT RING GRIP | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | IRON ALLOY 660 OVERALL | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST HOLE | | WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | THREAD LENGTH | 0.214 INCHES MINIMUM AND 0.276 INCHES MAXIMUM | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 32 |
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