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National Stock Number:
5306-01-102-2688
Federal Supply Class:
5306
National Item Identification Number:
011022688
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:
| AIC260E-4-34 | 06725 | SPS TECHNOLOGIES, LLC | | C305-4-34 | 27624 | SPS TECHNOLOGIES LLC | | C305-4-34 | 56878 | SPS TECHNOLOGIES, LLC | | C305-4-34 | 81755 | LOCKHEED MARTIN CORPORATION | | C305-4-34 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | C305-4-34 | A0126 | LEONARDO SPA HELICOPTERS DIVISION -PRODUCTION SITE | | VS2005-4-34 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | EWB26-4-34 | 56878 | SPS TECHNOLOGIES, LLC | | EWB26-4-34 | 80539 | SPS TECHNOLOGIES, LLC | | VS2005-4-34 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS 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 | 0.506 INCHES MINIMUM AND | | 0.556 INCHES MAXIMUM | | FASTENER LENGTH | 2.641 INCHES MINIMUM AND | | 2.671 INCHES MAXIMUM | | MATERIAL | STEEL COMP H11 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6485 ASSN STD SINGLE MATERIAL RESPONSE OR | | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND | | CHROMATE OR | | NICKEL AND | | CADMIUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-8837 TYPE 2 CL 3 MIL SPEC 1ST TREATMENT RESPONSE OR | | AMS 2416 ASSN STD 2ND TREATMENT RESPONSE OVERALL | | HARDNESS RATING | 51.0 ROCKWELL C MINIMUM AND | | 54.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 260000 POUNDS PER SQUARE INCH | | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER | | HEAD HEIGHT | 0.244 INCHES MINIMUM AND | | 0.264 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.304 INCHES MINIMUM AND | | 0.313 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.465 INCHES MINIMUM AND | | 0.475 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.032 INCHES MINIMUM AND | | 0.052 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 |
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