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National Stock Number:
5306-01-222-9078
Federal Supply Class:
5306
National Item Identification Number:
012229078
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:
| A02R3712-2 | 29372 | HOWMET GLOBAL FASTENING SYSTEMS INC. | | A02R3712-2 | 56878 | SPS TECHNOLOGIES, LLC | | A02R3712-2 | 77272 | THE BOEING COMPANY | | A02R3712-2 | 80539 | SPS TECHNOLOGIES, LLC | | A02R3712-2 | 81205 | THE BOEING COMPANY | | A02R3712-2 | 84256 | AVIBANK MFG., INC. |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.554 INCHES MINIMUM FIRST HOLE AND 2.614 INCHES MAXIMUM FIRST HOLE | | FASTENER LENGTH | 3.096 INCHES MINIMUM AND 3.126 INCHES MAXIMUM | | GRIP DIAMETER | 0.3738 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM | | GRIP LENGTH | 2.240 INCHES MINIMUM AND 2.260 INCHES MAXIMUM | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM FASTENER AND 40.0 ROCKWELL C MAXIMUM FASTENER | | HEAD HEIGHT | 0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM | | HEAD STYLE | DISHED HEXAGON | | MATERIAL | STEEL COMP E4340 FASTENER OR STEEL COMP 4140 FASTENER OR STEEL COMP 8740 FASTENER OR STEEL COMP 8735 FASTENER OR STEEL COMP 6150 FASTENER | | PROPRIETARY CHARACTERISTICS | PACS | | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM FIRST HOLE AND 0.116 INCHES MAXIMUM FIRST HOLE | | SPECIAL FEATURES | FASSEMBLY AREA EXTENDED AT THREADED END,0.402 MIN. AND 0.412 MAX. LENGTH 0.317 MIN. AND 0.320 MAX. DIAMETER; ASSEMBLY CONTAINS RETAINER PAWL,MATERIAL CRES PER AMS 5643,ROCKWELL HARDNESS 35.0 MIN. AND 39.0 MAX.,FINISH BLAST PER BAC 5951,PASSIVATE PER QQ-P-35,DRY FILM LUBE PER MIL-L-8937; SPRING,MATERIAL CRES PER AMS 5673,ROCKWELL HARDNESS 48.0 MIN. FINISH PASSIVATE PER QQ-P-35; PIN AND PLUGS,MATERIAL 303 CRES PER ASTM A 582,FINISH PASSIVATE PER QQ-P-35 | | WIDTH BETWEEN FLATS | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM | | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE FINISH | 32.0 MICROINCHES THREADS | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE FASTENER | | SURFACE TREATMENT | CADMIUM FASTENER AND CHROMATE FASTENER | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.454 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 24 |
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