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National Stock Number:
5306-01-276-7161
Federal Supply Class:
5306
National Item Identification Number:
012767161
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:
| 8761110-01 | 06710 | VALLEY-TODECO, INC. | | 8761110-01 | 56878 | SPS TECHNOLOGIES, LLC | | 8761110-01 | 8M097 | MCHAFFIE INC | | 8761110-01 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | 8761110-01 | 98748 | AIR FORCE UNITED STATES DEPARTMENT OF THE DBA TINKER AFB OC ALC DSP |
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Techincal Specification:
| EXTENDED WASHER THICKNESS | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.540 INCHES MINIMUM AND 0.560 INCHES MAXIMUM | | FASTENER LENGTH | 1.030 INCHES NOMINAL | | GRIP LENGTH | 0.360 INCHES MINIMUM AND 0.400 INCHES MAXIMUM | | HEAD HEIGHT | 0.400 INCHES MINIMUM AND 0.440 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS7459 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | WIDTH BETWEEN FLATS | 0.435 INCHES NOMINAL | | SURFACE FINISH | 16.0 MICROINCHES GRIP | | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS2403 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | NICKEL OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.650 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNF | | THREAD QUANTITY PER INCH | 24 |
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