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National Stock Number:
5306-01-205-8018
Federal Supply Class:
5306
National Item Identification Number:
012058018
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:
| 68485-6P29 | 56878 | SPS TECHNOLOGIES, LLC | | 68485-6P29 | 80539 | SPS TECHNOLOGIES, LLC | | STSBS001A06D029 | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2416 ASSN STD ALL TREATMENT RESPONSES OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL AND NICKEL OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.419 INCHES NOMINAL | | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.663 INCHES MINIMUM FIRST HOLE AND 1.695 INCHES MAXIMUM FIRST HOLE | | FASTENER LENGTH | 1.797 INCHES MINIMUM AND 1.844 INCHES MAXIMUM | | GRIP DIAMETER | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM | | GRIP LENGTH | 1.383 INCHES MINIMUM AND 1.403 INCHES MAXIMUM | | HEAD HEIGHT | 0.200 INCHES MINIMUM AND 0.220 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP H11 OVERALL | | MINIMUM TENSILE STRENGTH | 156000 POUNDS PER SQUARE INCH | | SHANK UNTHREADED HOLE DIAMETER | 0.106 INCHES MINIMUM FIRST HOLE AND 0.116 INCHES MAXIMUM FIRST HOLE | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJF | | WIDTH BETWEEN FLATS | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM | | SPECIFICATION/STANDARD DATA | 98897-STSBG001 MANUFACTURERS SPECIFICATION CONTROL | | SUPPLEMENTARY FEATURES | LUB CETYL ALCOHOL | | SURFACE FINISH | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
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