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National Stock Number:
5306-01-474-4282
Federal Supply Class:
5306
National Item Identification Number:
014744282
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:
| NAS6206-33 | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
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Techincal Specification:
| FASTENER LENGTH | 2.564 INCHES MINIMUM AND 2.594 INCHES MAXIMUM | | GRIP DIAMETER | 0.3729 INCHES MINIMUM AND 0.3735 INCHES MAXIMUM | | GRIP LENGTH | 2.115 INCHES MINIMUM AND 2.135 INCHES MAXIMUM | | HEAD HEIGHT | 0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.3750 INCHES | | SPECIAL FEATURES | HEAT TREAT 160 TO 180 KSI ULTIMATE TENSIL, 95 KSI MINIMUM ULTIMATE SHEAR | | SPECIFICATION/STANDARD DATA | 80205-NAS6206 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD | | WIDTH BETWEEN FLATS | 0.554 INCHES MINIMUM AND 0.564 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 3A | | THREAD LENGTH | 0.454 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 24 |
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