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National Stock Number:
5306-01-172-9035
Federal Supply Class:
5306
National Item Identification Number:
011729035
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:
| 75A240602-2001 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| DISTANCE FROM CENTERLINE TO FLAT | 0.278 INCHES MINIMUM AND 0.288 INCHES MAXIMUM | | FASTENER LENGTH | 1.620 INCHES MINIMUM AND 1.650 INCHES MAXIMUM | | GRIP DIAMETER | 0.3120 INCHES NOMINAL | | GRIP LENGTH | 1.184 INCHES NOMINAL | | HEAD DIAMETER | 0.550 INCHES NOMINAL | | HEAD HEIGHT | 0.100 INCHES NOMINAL | | HOLE DIAMETER | 0.078 INCHES MINIMUM AND 0.128 INCHES MAXIMUM | | HOLE CONFIGURATION STYLE | ROUND LONGITUDINAL HOLE | | HOLE QUANTITY | 1 | | HOLE TYPE | DRILLED | | NOMINAL THREAD DIAMETER | 0.313 INCHES | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL CORROSION RESISTING OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | PS13001 MFR REF SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.323 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 24 | | THREAD SERIES DESIGNATOR | UNJEF |
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