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National Stock Number:
5306-01-581-4357
Federal Supply Class:
5306
National Item Identification Number:
015814357
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:
| BACB30UU6K27D | 06710 | VALLEY-TODECO, INC. | | BACB30UU6K27D | 06725 | SPS TECHNOLOGIES, LLC | | BACB30UU6K27D | 16258 | SPACE-LOK, INC. | | BACB30UU6K27D | 17943 | FEDERAL MANUFACTURING CORP | | BACB30UU6K27D | 1RC86 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BACB30UU6K27D | 27624 | SPS TECHNOLOGIES LLC | | BACB30UU6K27D | 56878 | SPS TECHNOLOGIES, LLC | | BACB30UU6K27D | 57928 | SONIC INDUSTRIES, INC. | | BACB30UU6K27D | 81205 | THE BOEING COMPANY | | BACB30UU6K27D | L4258 | FRANKLIN ENTERPRISES LTD |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.470 INCHES NOMINAL | | FASTENER LENGTH | 2.143 INCHES MINIMUM AND | | 2.173 INCHES MAXIMUM | | MATERIAL | NICKEL ALLOY 718 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 4662 ASSN STD SINGLE MATERIAL RESPONSE OR | | AMS 5962 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | ALUMINUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | BMS 10-85, TYPE 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | DOUBLE HEXAGON | | HEAD HEIGHT | 0.200 INCHES MINIMUM AND | | 0.220 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.553 INCHES MINIMUM AND | | 0.564 INCHES MAXIMUM | | GRIP LENGTH | 1.678 INCHES MINIMUM AND | | 1.698 INCHES MAXIMUM | | GRIP DIAMETER | 0.374 INCHES NOMINAL | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, 12 POINT HEAD, SHORT THREAD, CLOSE TOLERANCE, NICKEL ALLOY 718, 125 KSI MINIMUM SHEAR |
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