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National Stock Number:
5306-00-317-4372
Federal Supply Class:
5306
National Item Identification Number:
003174372
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:
| 68B480062-2001 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.291 INCHES MINIMUM AND | | 0.341 INCHES MAXIMUM | | FASTENER LENGTH | 0.926 INCHES MINIMUM AND | | 0.956 INCHES MAXIMUM | | MATERIAL | TITANIUM ALLOY OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | NAS621 COMP 6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OR | | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | ENAMEL OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | 68A900000 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | | HEAD STYLE | HEXAGON | | HEAD HEIGHT | 0.125 INCHES MINIMUM AND | | 0.140 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.430 INCHES MINIMUM AND | | 0.439 INCHES MAXIMUM | | GRIP LENGTH | 0.615 INCHES MINIMUM AND | | 0.635 INCHES MAXIMUM | | GRIP DIAMETER | 0.2490 INCHES MINIMUM AND | | 0.2495 INCHES MAXIMUM | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.075 INCHES NOMINAL FIRST HOLE | | 0.798 INCHES MINIMUM AND | | 0.848 INCHES MAXIMUM SECOND HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.094 INCHES MINIMUM AND | | 0.099 INCHES MAXIMUM FIRST HOLE | | 0.076 INCHES MINIMUM AND | | 0.086 INCHES MAXIMUM SECOND HOLE | | SPECIAL FEATURES | COUNTERSINK HOLE NEAREST HEAD 90 DEG BY 0.125 IN. DIA | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 76301 | | DESIGN CONTROL REFERENCE | 68B480062-2001 |
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