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National Stock Number:
5306-01-261-1603
Federal Supply Class:
5306
National Item Identification Number:
012611603
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:
| 20-071-7A14 | 97499 | BELL TEXTRON INC | | 220121-7A14 | 06710 | VALLEY-TODECO, INC. | | AIC 220EL-7A14 | 06725 | SPS TECHNOLOGIES, LLC | | H355-7A14 | 17446 | HUCK INTERNATIONAL, INC | | PBF1317-7A14 | 27624 | SPS TECHNOLOGIES LLC | | H355-7A14 | 97928 | HUCK INTL INC | | SPS-B-54471-7A14 | 56878 | SPS TECHNOLOGIES, LLC | | VS3070-7A14 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.437 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.640 INCHES MINIMUM AND | | 0.690 INCHES MAXIMUM | | FASTENER LENGTH | 1.525 INCHES MINIMUM AND | | 1.555 INCHES MAXIMUM | | MATERIAL | STEEL COMP H11 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND | | CHROMATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | HARDNESS RATING | 46.0 ROCKWELL C MINIMUM AND | | 50.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH | | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER | | HEAD HEIGHT | 0.425 INCHES MINIMUM AND | | 0.445 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND | | 0.502 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.740 INCHES MINIMUM AND | | 0.750 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.089 INCHES MINIMUM AND | | 0.109 INCHES MAXIMUM | | GRIP LENGTH | 0.865 INCHES MINIMUM AND | | 0.885 INCHES MAXIMUM | | GRIP DIAMETER | 0.436 INCHES MINIMUM AND | | 0.437 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | 32.0 MICROINCHES GRIP | | 32.0 MICROINCHES THREADS | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.314 INCHES MINIMUM AND | | 1.364 INCHES MAXIMUM FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.101 INCHES MINIMUM AND | | 0.111 INCHES MAXIMUM FIRST HOLE | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
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