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National Stock Number:
5306-01-104-4849
Federal Supply Class:
5306
National Item Identification Number:
011044849
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:
| 55759V6-13 | 56878 | SPS TECHNOLOGIES, LLC | | 55759V6-13 | 80539 | SPS TECHNOLOGIES, LLC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.594 INCHES MINIMUM AND | | 0.644 INCHES MAXIMUM | | FASTENER LENGTH | 1.417 INCHES MINIMUM AND | | 1.447 INCHES MAXIMUM | | MATERIAL | TITANIUM ALLOY UNS R54520 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR | | AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | HEAD HEIGHT | 0.378 INCHES MINIMUM AND | | 0.398 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.430 INCHES MINIMUM AND | | 0.439 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.639 INCHES MINIMUM AND | | 0.649 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.081 INCHES MINIMUM AND | | 0.101 INCHES MAXIMUM | | GRIP LENGTH | 0.803 INCHES MINIMUM AND | | 0.823 INCHES MAXIMUM | | GRIP DIAMETER | 0.3735 INCHES MINIMUM AND | | 0.3745 INCHES MAXIMUM | | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD | | 63.0 MICROINCHES GRIP | | 16.0 MICROINCHES THREADS | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
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