NSN 5306-01-337-6979

Part Details | CLOSE TOLERANCE BOLT

5306-01-337-6979 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.

Alternate Parts: BACB30UU827D, BACB30UU8-27D, BACB30UU827D, BACB30UU8-27D, BACB30UU827D, BACB30UU8-27D, BACB30UU827D, BACB30UU8-27D, BACB30UU827D, BACB30UU8-27D, BACB30UU827D, BACB30UU8-27D, BACB30UU827D, BACB30UU8-27D, BACB30UU827D, BACB30UU8-27D, BACB30UU827D, BACB30UU8-27D, BACB30UU827D, BACB30UU8-27D, 5306-01-337-6979, 01-337-6979, 5306013376979, 013376979

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53APR 21, 199101-337-697927851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

DOUBLE HEXAGON

Cross Reference | NSN 5306-01-337-6979
Part Number Cage Code Manufacturer
BACB30UU8-27D92215ARCONIC GLOBAL FASTENERS & RINGS,INC.
BACB30UU8-27D17943FEDERAL MANUFACTURING CORPORATION
BACB30UU8-27D17446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
BACB30UU8-27D97928HUCK INTL INC
BACB30UU8-27D57928SONIC INDUSTRIES INC.
BACB30UU8-27D56878SPS TECHNOLOGIES, LLCDBA AEROSPACE DIVISION
BACB30UU8-27D06725SPS TECHNOLOGIES, LLCDBA AIR INDUSTRIES
BACB30UU8-27D27624SPS TECHNOLOGIES, LLCDBA PB FASTENERS
BACB30UU8-27D81205THE BOEING COMPANYDBA BOEING
BACB30UU8-27D06710VALLEY-TODECO, INC.DBA ARCONIC FASTENING SYSTEMS AND
Technical Data | NSN 5306-01-337-6979
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.500 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.541 INCHES NOMINAL
FASTENER LENGTH2.213 INCHES MINIMUM AND 2.243 INCHES MAXIMUM
HEAD STYLE DOUBLE HEXAGON
HEAD HEIGHT0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM
GRIP LENGTH1.677 INCHES MINIMUM AND 1.697 INCHES MAXIMUM
GRIP DIAMETER0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM