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National Stock Number: 5306-01-301-5788
Federal Supply Class: 5306
National Item Identification Number: 013015788
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:
65662-11235-101 | 78286 | SIKORSKY AIRCRAFT CORPORATION | AS421 | 84256 | AVIBANK MFG., INC. |
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Techincal Specification:
THREAD SERIES DESIGNATOR | UNJF | NOMINAL THREAD DIAMETER | 0.625 INCHES | THREAD DIRECTION | RIGHT-HAND | THREAD LENGTH | 0.873 INCHES NOMINAL | FASTENER LENGTH | 1.545 INCHES NOMINAL | MATERIAL | STEEL COMP 4340 OVERALL | SURFACE TREATMENT | CADMIUM OVERALL | HEAD STYLE | DOUBLE HEXAGON W/HOLE | HEAD HEIGHT | 0.618 INCHES NOMINAL | WIDTH BETWEEN FLATS | 0.682 INCHES MINIMUM AND | | 0.691 INCHES MAXIMUM | EXTENDED WASHER DIAMETER | 1.040 INCHES MINIMUM AND | | 1.050 INCHES MAXIMUM | EXTENDED WASHER THICKNESS | 0.150 INCHES NOMINAL | HOLE CONFIGURATION STYLE | HEXAGON LONGITUDINAL HOLE | HOLE TYPE | DRILLED | HOLE DIAMETER | 0.688 INCHES NOMINAL | GRIP LENGTH | 0.687 INCHES NOMINAL | GRIP DIAMETER | 0.623 INCHES MINIMUM AND | | 0.624 INCHES MAXIMUM | SPEC/STD CONTROLLING DATA | | MANUFACTURERS CODE | 78286 | MFR SOURCE CONTROLLING REFERENCE | 65662-11235-101 |
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