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National Stock Number:
5306-01-495-4101
Federal Supply Class:
5306
National Item Identification Number:
014954101
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:
| MS9725-08 | 0U583 | SAE INTERNATIONAL | | MS9725-08 | 81343 | SOCIETY OF AUTOMOTIVE ENGINEERS INC |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 0.500 INCHES NOMINAL | | EXTENDED WASHER THICKNESS | 0.070 INCHES NOMINAL | | FASTENER LENGTH | 1.063 INCHES NOMINAL | | GRIP LENGTH | 0.417 INCHES NOMINAL | | GRIP DIAMETER | 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM | | HEAD HEIGHT | 0.338 INCHES NOMINAL | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5708 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY OVERALL | | NOMINAL THREAD DIAMETER | 0.3125 INCHES | | WIDTH BETWEEN FLATS | 0.3750 INCHES NOMINAL | | SURFACE FINISH | 125.0 MICROINCHES GRIP | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.553 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 24 |
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