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National Stock Number:
5306-01-508-0906
Federal Supply Class:
5306
National Item Identification Number:
015080906
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:
| 106467-12-47 | 56878 | SPS TECHNOLOGIES, LLC | | AS194-12-47 | 84256 | AVIBANK MFG., INC. | | SLB155-0247 | 16258 | SPACE-LOK, INC. | | FTC7463-247 | 58794 | FASTENER TECHNOLOGY CORP | | AS194-12-47 | 85256 | DUNDEE MILLS INC | | HS5039-0247 | 8V613 | THE BOEING COMPANY |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.750 INCHES | | THREAD QUANTITY PER INCH | 16 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | FASTENER LENGTH | 3.960 INCHES NOMINAL | | MATERIAL | STEEL COMP 4140 OR | | STEEL COMP 4340 OR | | STEEL COMP 6150 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS6382 ASSN STD 1ST MATERIAL RESPONSE OR | | AMS6415 ASSN STD 2ND MATERIAL RESPONSE OR | | AMS6448 ASSN STD 2ND MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND | | 42.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 39800 POUNDS PER SQUARE INCH | | HEAD STYLE | HEXAGON COUNTERSUNK UNDERCUT | | BOTTOM COUNTERSINK DIAMETER | 1.023 INCHES MINIMUM | | HEAD HEIGHT | 0.376 INCHES MINIMUM | | WIDTH BETWEEN FLATS | 1.194 INCHES MINIMUM | | GRIP LENGTH | 2.938 INCHES MINIMUM AND | | 2.954 INCHES MAXIMUM |
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