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National Stock Number:
5306-01-085-3227
Federal Supply Class:
5306
National Item Identification Number:
010853227
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:
| MS21250-04034 | 06710 | VALLEY-TODECO, INC. | | MS21250-04034 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | MS21250-04034 | 17446 | HUCK INTERNATIONAL, INC | | MS21250-04034 | 27624 | SPS TECHNOLOGIES LLC | | MS21250-04034 | 50945 | MERCURY AEROSPACE FASTENERS INC | | MS21250-04034 | 52628 | CHANDLER CRAFTSMAN CONTROLS | | MS21250-04034 | 56878 | SPS TECHNOLOGIES, LLC | | MS21250-04034 | 57472 | ALL MANUFACTURERS, INC. | | MS21250-04034 | 70276 | ALLEN MFG CO SUB OF CHICAGO PNEUMATIC TOOL CO | | MS21250-04034 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE | | MS21250-04034 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | MS21250-04034 | 93907 | TEXTRON FASTENING SYSTEMS DBA DECORAH OPERATIONS TFS | | MS21250-04034 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M | | MS21250-04034 | 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 | 0.492 INCHES MINIMUM AND | | 0.532 INCHES MAXIMUM | | FASTENER LENGTH | 2.627 INCHES MINIMUM AND | | 2.647 INCHES MAXIMUM | | MATERIAL | STEEL COMP 4140 OR | | STEEL COMP E4340 OR | | STEEL COMP 8740 OR | | STEEL COMP 6150 OVERALL | | SURFACE TREATMENT | CADMIUM AND | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE 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 | DOUBLE HEXAGON W/HOLE | | HEAD HEIGHT | 0.290 INCHES MINIMUM AND | | 0.310 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.302 INCHES MINIMUM AND | | 0.322 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.428 INCHES MINIMUM AND | | 0.438 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.059 INCHES MINIMUM AND | | 0.079 INCHES MAXIMUM | | GRIP LENGTH | 2.115 INCHES MINIMUM AND | | 2.135 INCHES MAXIMUM | | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND | | 0.2495 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | 32.0 MICROINCHES GRIP |
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