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National Stock Number:
5306-01-613-4779
Federal Supply Class:
5306
National Item Identification Number:
016134779
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:
| STSBG001A07U014 | 06710 | VALLEY-TODECO, INC. | | STSBG001A07U014 | 06725 | SPS TECHNOLOGIES, LLC | | STSBG001A07U014 | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | STSBG001A07U014 | 1CNU4 | JOHN HASSALL LLC | | STSBG001A07U014 | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | STSBG001A07U014 | 27624 | SPS TECHNOLOGIES LLC | | STSBG001A07U014 | 56878 | SPS TECHNOLOGIES, LLC | | STSBG001A07U014 | 59563 | REID PRODUCTS INC. | | STSBG001A07U014 | 98897 | LOCKHEED MARTIN CORP |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNF | | NOMINAL THREAD DIAMETER | 0.4375 INCHES | | THREAD QUANTITY PER INCH | 20 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.495 INCHES NOMINAL | | FASTENER LENGTH | 1.849 INCHES MINIMUM AND | | 1.896 INCHES MAXIMUM | | MATERIAL | STEEL OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | STSBS001 H-11 STEEL MFR REF SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | CHROMATE AND | | CADMIUM OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | STSBS001 MFR REF ALL TREATMENT RESPONSES OVERALL | | MINIMUM TENSILE STRENGTH | 156000 POUNDS PER SQUARE INCH | | HEAD STYLE | DOUBLE HEXAGON | | HEAD HEIGHT | 0.247 INCHES MINIMUM AND | | 0.267 INCHES MAXIMUM | | WIDTH BETWEEN FLATS | 0.678 INCHES MINIMUM AND | | 0.689 INCHES MAXIMUM | | GRIP LENGTH | 1.360 INCHES MINIMUM AND | | 1.380 INCHES MAXIMUM | | GRIP DIAMETER | 0.4360 INCHES MINIMUM AND | | 0.4370 INCHES MAXIMUM | | SPECIAL FEATURES | TEMP RANGE IS -65 TO 900 DEGREES F. LUBRICATION IS CETYL ALCOHOL. | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT-SHEAR |
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