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National Stock Number:
5306-00-490-4588
Federal Supply Class:
5306
National Item Identification Number:
004904588
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:
| 73119 | 56878 | SPS TECHNOLOGIES, LLC |
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Techincal Specification:
| THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.848 INCHES MINIMUM AND | | 0.898 INCHES MAXIMUM | | FASTENER LENGTH | 1.733 INCHES MINIMUM AND | | 1.763 INCHES MAXIMUM | | MATERIAL | STEEL COMP E4340 OR | | STEEL COMP 8740 OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | HARDNESS RATING | 37.0 ROCKWELL C MINIMUM AND | | 43.0 ROCKWELL C MAXIMUM OVERALL | | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH | | HEAD STYLE | DOUBLE HEXAGON W/HOLE | | HEAD HEIGHT | 0.603 INCHES MINIMUM AND | | 0.629 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.682 INCHES MINIMUM AND | | 0.691 INCHES MAXIMUM | | EXTENDED WASHER DIAMETER | 1.040 INCHES MINIMUM AND | | 1.050 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.130 INCHES MINIMUM AND | | 0.160 INCHES MAXIMUM | | HOLE CONFIGURATION STYLE | DOUBLE HEXAGON LONGITUDINAL HOLE | | HOLE TYPE | DRILLED | | HOLE QUANTITY | 4 | | HOLE DIAMETER | 0.050 INCHES NOMINAL | | GRIP LENGTH | 0.865 INCHES MINIMUM AND | | 0.885 INCHES MAXIMUM | | GRIP DIAMETER | 0.6230 INCHES MINIMUM AND | | 0.6240 INCHES MAXIMUM | | SPECIAL FEATURES | FOUR ANGULAR SLOTS IN HEAD 0.050 IN. WIDE BY 0.010 IN. DEEP. ASYMNETRIC THREADS SPS-T-282 FSCM 56878 | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 56878 | | DESIGN CONTROL REFERENCE | 73119 |
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