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National Stock Number:
5306-01-579-4506
Federal Supply Class:
5306
National Item Identification Number:
015794506
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:
| NAS6203-5DH | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |
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Techincal Specification:
| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 0.582 INCHES NOMINAL OVERALL | | FASTENER LENGTH | 0.621 INCHES MINIMUM AND 0.651 INCHES MAXIMUM | | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM | | GRIP LENGTH | 0.303 INCHES MINIMUM AND 0.323 INCHES MAXIMUM | | HEAD HEIGHT | 0.110 INCHES NOMINAL | | HEAD STYLE | DISHED HEXAGON | | PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, TENSION, HEX HEAD, CLOSE TOLERANCE, ALLOY STEEL, SHORT THREAD, REDUCED MAJOR THREAD DIIA., SELF-LOCKING, 160 KSI FTU | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.190 INCHES | | SHANK UNTHREADED HOLE DIAMETER | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST HOLE | | SPECIAL FEATURES | BOLT HAS DRILLED HEAD (3 PLACES EACH HAVING A 0.046 TO 0.056 INCH DIAMETER);ALSO HAS A DRILLED SHANK HAVING A 0.070 TO 0.080 INCH DIAMETER | | SPECIFICATION/STANDARD DATA | 80205-NAS6203 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD | | WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS QQ-P-416, TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.323 INCHES NOMINAL | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNJF |
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