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National Stock Number:
5306-01-267-0046
Federal Supply Class:
5306
National Item Identification Number:
012670046
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:
| MS21250H05038 | 96906 | MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.579 INCHES MINIMUM AND | | 0.619 INCHES MAXIMUM | | FASTENER LENGTH | 2.964 INCHES MINIMUM AND | | 2.984 INCHES MAXIMUM | | MATERIAL | STEEL COMP 4140 OR | | STEEL COMP E4340 OR | | STEEL COMP 8740 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR | | MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR | | MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2 CLASS 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 | 0.338 INCHES MINIMUM AND | | 0.358 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.365 INCHES MINIMUM AND | | 0.385 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.521 INCHES MINIMUM AND | | 0.531 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.072 INCHES MINIMUM AND | | 0.092 INCHES MAXIMUM | | HOLE CONFIGURATION STYLE | DOUBLE HEXAGON LONGITUDINAL HOLE | | HOLE TYPE | DRILLED | | HOLE QUANTITY | 4 | | HOLE DIAMETER | 0.050 INCHES MINIMUM AND | | 0.060 INCHES MAXIMUM | | GRIP LENGTH | 2.365 INCHES MINIMUM AND | | 2.385 INCHES MAXIMUM | | GRIP DIAMETER | 0.311 INCHES MINIMUM AND | | 0.312 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | 32.0 MICROINCHES GRIP | | 32.0 MICROINCHES THREADS | | SPEC/STD CONTROLLING DATA | | | MANUFACTURERS CODE | 96906 | | DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS21250H05038 |
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