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National Stock Number:
5306-01-047-9431
Federal Supply Class:
5306
National Item Identification Number:
010479431
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:
| 51B464-4-34 | 0JRC1 | NORTHROP GRUMMAN TECHNICAL SERVICES, INC. | | 51B464-4-34 | 76823 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 51B465-4-34 | 17446 | HUCK INTERNATIONAL, INC | | 51B465-4-34 | 97928 | HUCK INTL INC |
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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 | 0.296 INCHES MINIMUM AND | | 0.357 INCHES MAXIMUM | | FASTENER LENGTH | 2.431 INCHES MINIMUM AND | | 2.472 INCHES MAXIMUM | | MATERIAL | STEEL COMP E4340 OR | | STEEL COMP 4340 OR | | STEEL COMP 4140 OR | | STEEL COMP 8740 OVERALL | | SURFACE TREATMENT | CADMIUM AND | | CHROMATE OVERALL | | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND | | 43.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH | | HEAD STYLE | HEXAGON | | HEAD HEIGHT | 0.120 INCHES MINIMUM AND | | 0.140 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND | | 0.440 INCHES MAXIMUM | | GRIP LENGTH | 2.115 INCHES MINIMUM AND | | 2.135 INCHES MAXIMUM | | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND | | 0.2495 INCHES MAXIMUM | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.315 INCHES MINIMUM AND | | 2.356 INCHES MAXIMUM FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES NOMINAL FIRST HOLE | | SPECIFICATION/STANDARD DATA | 76823-51B464 MANUFACTURERS STANDARD |
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