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National Stock Number:
5306-01-510-4659
Federal Supply Class:
5306
National Item Identification Number:
015104659
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:
| BACB30FA4R8P | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BACB30FA4R8P | 1RC86 | HOWMET GLOBAL FASTENING SYSTEMS INC | | BACB30FA4R8P | 56878 | SPS TECHNOLOGIES, LLC | | BACB30FA4R8P | 81205 | THE BOEING COMPANY |
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Techincal Specification:
| FASTENER LENGTH | 4.000 INCHES NOMINAL | | HEAD DIAMETER | 0.464 INCHES MINIMUM AND 0.510 INCHES MAXIMUM | | LOCKING FEATURE | PATCH LOCKING FEATURE | | SPECIAL FEATURES | 100 DEGREE HEAD, DOVETAIL RECESS,SELF LOCKING ELEMENT IS POLYAMIDE PER MIL-F-18240;160 TO 180KSI PER MIL-M-6875 | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY2,CL2 FED SPEC 1ST TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 3A | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNJC |
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