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National Stock Number:
5306-01-523-8322
Federal Supply Class:
5306
National Item Identification Number:
015238322
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:
| NAS6704-39 | 97499 | BELL TEXTRON INC |
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Techincal Specification:
| CRITICALITY CODE JUSTIFICATION | AGAV | | FASTENER LENGTH | 2.863 INCHES NOMINAL | | GRIP DIAMETER | 0.241 INCHES MINIMUM AND 0.244 INCHES MAXIMUM | | GRIP LENGTH | 2.428 INCHES MINIMUM AND 2.448 INCHES MAXIMUM | | HEAD STYLE | DISHED HEXAGON | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-320 FED SPEC 1ST MATERIAL RESPONSE FASTENER | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-F-416 FED SPEC 1ST MATERIAL RESPONSE THREADS | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC 2ND MATERIAL RESPONSE BEARING SURFACE OF HEAD | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC 1ST MATERIAL RESPONSE SIDES OF HEAD | | MATERIAL | IRON ALLOY 660 OVERALL | | SURFACE TREATMENT | CHROMIUM FASTENER | | SURFACE TREATMENT | CADMIUM BEARING SURFACE OF HEAD | | SURFACE TREATMENT | CADMIUM THREADS | | SURFACE TREATMENT | CADMIUM TOP OF HEAD | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.425 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF |
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