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National Stock Number:
5306-00-942-2158
Federal Supply Class:
5306
National Item Identification Number:
009422158
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:
| 51B464-4A27 | 06725 | SPS TECHNOLOGIES, LLC | | 51B464-4A27 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | 51B464-4A27 | 0JRC1 | NORTHROP GRUMMAN TECHNICAL SERVICES, INC. | | 51B464-4A27 | 27624 | SPS TECHNOLOGIES LLC | | 51B464-4A27 | 73197 | HI-SHEAR CORPORATION | | 51B464-4A27 | 76823 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 51B64-4A27 | 17446 | HUCK INTERNATIONAL, INC | | 51B464-4A27 | 80539 | SPS TECHNOLOGIES, LLC | | 51B464-4A27 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | 51B64-4A27 | 97928 | HUCK INTL INC | | 51B464-4A27 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC |
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Techincal Specification:
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM | | SURFACE FINISH | 32.0 MICROINCHES GRIP | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.303 INCHES MINIMUM AND 0.326 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 28 | | THREAD SERIES DESIGNATOR | UNF | | FASTENER LENGTH | 1.994 INCHES MINIMUM AND 2.035 INCHES MAXIMUM | | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM | | GRIP LENGTH | 1.678 INCHES MINIMUM AND 1.698 INCHES MAXIMUM | | HEAD HEIGHT | 0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM | | HEAD STYLE | HEXAGON | | MATERIAL | STEEL COMP 4340 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 6150 OVERALL | | PROPRIETARY CHARACTERISTICS | PACS |
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