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National Stock Number:
5306-01-615-2163
Federal Supply Class:
5306
National Item Identification Number:
016152163
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:
| HS4243V9-14 | 06725 | SPS TECHNOLOGIES, LLC | | HS4243V9-14 | 16258 | SPACE-LOK, INC. | | HS4243V9-14 | 56878 | SPS TECHNOLOGIES, LLC | | HS4243V9-14 | 57928 | SONIC INDUSTRIES, INC. | | HS4243V9-14 | 8V613 | THE BOEING COMPANY |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.562 INCHES | | THREAD QUANTITY PER INCH | 18 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 1.025 INCHES NOMINAL | | FASTENER LENGTH | 1.885 INCHES MINIMUM AND | | 1.915 INCHES MAXIMUM | | MATERIAL | COBALT COMP MP-35-N OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5758 ASSN STD SINGLE MATERIAL RESPONSE OR | | AMS5844 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM AND | | DISULFIDE MOLYBDENUM FASTENER | | MINIMUM TENSILE STRENGTH | 56600 POUNDS PER SQUARE INCH | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | HEAD HEIGHT | 0.557 INCHES NOMINAL | | WIDTH BETWEEN FLATS | 0.616 INCHES MINIMUM AND | | 0.627 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 0.928 INCHES MINIMUM AND | | 0.938 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.133 INCHES NOMINAL | | GRIP LENGTH | 0.865 INCHES MINIMUM AND | | 0.885 INCHES MAXIMUM | | GRIP DIAMETER | 0.5605 INCHES MINIMUM AND | | 0.5615 INCHES MAXIMUM | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.712 INCHES NOMINAL FIRST HOLE | | SHANK UNTHREADED HOLE DIAMETER | 0.141 INCHES NOMINAL FIRST HOLE | | SPECIAL FEATURES | ITEM HAS PROTECTIVE TREATMENT OF VACUUM-CADMIUM IAW AMS-C-8837,TY II OR TY III,CL 2 W/MOLYBDENUM DISULFATE LUBRICANT IAW AS5272,TY I; HEAT TREATMENT OF ITEM SHALL BE VERIFIED BY TENSILE STRENGTH REQUIREMENTS SPECIFIED | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT,TENSION,DOUBLE HEX,MP35N MATL,260KSI |
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