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National Stock Number:
5306-01-026-7222
Federal Supply Class:
5306
National Item Identification Number:
010267222
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:
| J815P044A | 06710 | VALLEY-TODECO, INC. | | J815P044A | 06725 | SPS TECHNOLOGIES, LLC | | J815P044A | 07482 | GENERAL ELECTRIC COMPANY | | J815P044A | 23899 | J.W. MANUFACTURING, INC | | J815P044A | 32134 | REXNORD INC ROCKFORD AEROSPACE PRODUCTS INC |
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Techincal Specification:
| EXTENDED WASHER DIAMETER | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM | | EXTENDED WASHER THICKNESS | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM | | FASTENER LENGTH | 1.471 INCHES MINIMUM AND 1.491 INCHES MAXIMUM | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM | | GRIP LENGTH | 0.776 INCHES MINIMUM AND 0.786 INCHES MAXIMUM | | HEAD HEIGHT | 0.328 INCHES MINIMUM AND 0.348 INCHES MAXIMUM | | HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.3125 INCHES | | WIDTH BETWEEN FLATS | 0.3750 INCHES NOMINAL | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.700 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNJF | | THREAD QUANTITY PER INCH | 24 |
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