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National Stock Number:
5306-01-256-6881
Federal Supply Class:
5306
National Item Identification Number:
012566881
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:
| 801651-3-5 | 0PTK6 | SPS TECHNOLOGIES INC | | MB251-3-5 | 73197 | HI-SHEAR CORPORATION | | SC2663-3-5 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M7 | 0PTK6 | SPS TECHNOLOGIES INC | | PBF1264-3-5 | 27624 | SPS TECHNOLOGIES LLC | | MB251-3-5 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | ST3M731-3-5 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | VS3207-3-5 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M731-3-5 | 27624 | SPS TECHNOLOGIES LLC | | ST3M731-3-5 | 73197 | HI-SHEAR CORPORATION | | ST3M731-3-5 | 76301 | THE BOEING COMPANY | | ST3M731-3-5 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M731-3-5 | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | ST3M731-3-5 | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | VS3207-3-5 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.313 INCHES MINIMUM AND | | 0.363 INCHES MAXIMUM | | FASTENER LENGTH | 0.635 INCHES MINIMUM AND | | 0.665 INCHES MAXIMUM | | MATERIAL | TITANIUM ALLOY UNS R56400 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | ALUMINUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-83488,TYPE 2 CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | HEAD STYLE | HEXAGON | | HEAD HEIGHT | 0.110 INCHES MINIMUM AND | | 0.125 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND | | 0.376 INCHES MAXIMUM | | GRIP LENGTH | 0.302 INCHES MINIMUM AND | | 0.322 INCHES MAXIMUM | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND | | 0.1895 INCHES MAXIMUM | | SURFACE FINISH | 63.0 MICROINCHES BEARING SURFACE OF HEAD | | 63.0 MICROINCHES GRIP | | 16.0 MICROINCHES THREADS |
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