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National Stock Number:
5306-01-489-5918
Federal Supply Class:
5306
National Item Identification Number:
014895918
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:
| 3D0073-8-44 | 88277 | THE BOEING COMPANY | | 84604-8-44 | 56878 | SPS TECHNOLOGIES, LLC | | VCG0037-8-44 | 06710 | VALLEY-TODECO, INC. | | 874-8-44 | 06725 | SPS TECHNOLOGIES, LLC | | AIC874-8-44 | 06725 | SPS TECHNOLOGIES, LLC | | PBF1594-8-44 | 27624 | SPS TECHNOLOGIES LLC |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 0.922 INCHES MINIMUM AND 0.932 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.062 INCHES MINIMUM AND 0.082 INCHES MAXIMUM | | FASTENER LENGTH | 3.643 INCHES MINIMUM AND 3.663 INCHES MAXIMUM | | GRIP DIAMETER | 0.4985 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM | | GRIP LENGTH | 2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM | | HEAD HEIGHT | 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM | | HEAD MINOR DIAMETER | 0.547 INCHES MINIMUM AND 0.562 INCHES MAXIMUM | | HEAD STYLE | SPLINE EXTENDED WASHER | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY 718 OVERALL | | NOMINAL THREAD DIAMETER | 0.500 INCHES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.908 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 20 |
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