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National Stock Number:
5306-01-378-4320
Federal Supply Class:
5306
National Item Identification Number:
013784320
Description:
BOLT,CLOSE TOLERANCE
Detail:
An externally threaded fastener whose unthreaded portion is of a specified 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. 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. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.
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Manufacturer Information:
| 9372359 | 98747 | OGDEN AIR LOGISTICS CENTER | | 9372359 | 98749 | SACRAMENTO AIR LOGISTICS CENTER SM-ALC/LIIL | | AIC260E-12 | 06725 | SPS TECHNOLOGIES, LLC | | VS2005-12 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | PBF26T12 | 27624 | SPS TECHNOLOGIES LLC | | EWB26-12 | 56878 | SPS TECHNOLOGIES, LLC | | VS2005-12 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 1.415 INCHES MINIMUM AND 1.425 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.152 INCHES NOMINAL | | FASTENER LENGTH | 7.424 INCHES MINIMUM AND 7.454 INCHES MAXIMUM | | GRIP DIAMETER | 0.748 INCHES MINIMUM AND 0.749 INCHES MAXIMUM | | GRIP LENGTH | 6.000 INCHES NOMINAL | | HARDNESS RATING | 51.0 ROCKWELL C MINIMUM FASTENER AND 54.0 ROCKWELL C MAXIMUM FASTENER | | HEAD HEIGHT | 0.806 INCHES NOMINAL | | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER | | NOMINAL THREAD DIAMETER | 0.750 INCHES | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS6485 ASSN STD 1ST MATERIAL RESPONSE OVERALL OR AMS 6487 ASSN STD 2ND MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP H11 OVERALL | | MINIMUM TENSILE STRENGTH | 260000 POUNDS PER SQUARE INCH | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.439 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 16 | | WIDTH BETWEEN FLATS | 0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-8837,TYPE II,CLASS 3,TYPE II,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL OR AMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL OR NICKEL OVERALL |
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