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National Stock Number:
5306-01-544-4221
Federal Supply Class:
5306
National Item Identification Number:
015444221
Description:
BOLT,SHEAR
Detail:
A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. 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. The unthreaded portion is of specific 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. A locking feature may be incorporated in the design of the head or threads. See BOLT, MACHINE and BOLT, CLEVIS.
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Manufacturer Information:
| BACB30US8K48X | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 0.818 INCHES MINIMUM AND 0.828 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.113 INCHES MINIMUM AND 0.133 INCHES MAXIMUM | | FASTENER LENGTH | 3.813 INCHES NOMINAL | | GRIP DIAMETER | 0.5137 INCHES NOMINAL | | GRIP LENGTH | 2.990 INCHES MINIMUM AND 3.010 INCHES MAXIMUM | | HEAD HEIGHT | 0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | MATERIAL | NICKEL ALLOY 718 OVERALL | | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH | | WIDTH BETWEEN FLATS | 0.547 INCHES MINIMUM AND 0.562 INCHES MAXIMUM | | SURFACE TREATMENT | ALUMINUM OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.813 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNJF |
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