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National Stock Number:
5306-01-347-6377
Federal Supply Class:
5306
National Item Identification Number:
013476377
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:
| 11829-4-29 | 59563 | REID PRODUCTS INC. | | 121673-4-29 | 80539 | SPS TECHNOLOGIES, LLC | | ST3M735-4-29 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| FASTENER LENGTH | 2.231 INCHES MINIMUM AND 2.251 INCHES MAXIMUM | | GRIP DIAMETER | 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM | | GRIP LENGTH | 1.812 INCHES MINIMUM AND 1.828 INCHES MAXIMUM | | HEAD HEIGHT | 0.126 INCHES MINIMUM AND 0.141 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | HOLE CONFIGURATION STYLE | HEXAGON CORNERS | | HOLE DIAMETER | 0.046 INCHES MINIMUM AND 0.056 INCHES MAXIMUM | | HOLE QUANTITY | 3 | | HOLE TYPE | DRILLED | | LOCKING FEATURE | DETENT RING THREADS | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | WIDTH BETWEEN FLATS | 0.488 INCHES NOMINAL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OO-P-35 ASSN STD SINGLE TREATMENT RESPONSE RINGQQ-P-416,TYPE II,CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE FASTENER | | SURFACE TREATMENT | PASSIVATE RINGCADMIUM FASTENER | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.105 INCHES MINIMUM AND 0.120 INCHES MAXIMUM | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 28 |
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