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National Stock Number:
5306-01-180-1726
Federal Supply Class:
5306
National Item Identification Number:
011801726
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:
| 71668-12-25 | 56878 | SPS TECHNOLOGIES, LLC |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.940 INCHES NOMINAL FIRST HOLE | | FASTENER LENGTH | 2.110 INCHES MINIMUM AND 2.140 INCHES MAXIMUM | | GRIP DIAMETER | 0.7480 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM | | GRIP LENGTH | 1.563 INCHES NOMINAL | | HEAD HEIGHT | 0.400 INCHES NOMINAL | | HEAD STYLE | DOUBLE HEXAGON | | NOMINAL THREAD DIAMETER | 0.750 INCHES | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6485 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | MINIMUM TENSILE STRENGTH | 260000 POUNDS PER SQUARE INCH | | SHANK UNTHREADED HOLE DIAMETER | 0.136 INCHES MINIMUM FIRST HOLE AND 0.146 INCHES MAXIMUM FIRST HOLE | | THREAD QUANTITY PER INCH | 16 | | THREAD SERIES DESIGNATOR | UNJF | | WIDTH BETWEEN FLATS | 1.052 INCHES MINIMUM AND 1.064 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2416 ASSN STD 1ST TREATMENT RESPONSE OVERALL AND AMS 2416 ASSN STD 2ND TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | NICKEL OVERALL AND CADMIUM OVERALL AND CHROMATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.562 INCHES NOMINAL |
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