NSN 5306-00-144-3644

Part Details | CLOSE TOLERANCE BOLT

5306-00-144-3644 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: AN177H52, 87T52, 5306-00-144-3644, 00-144-3644, 5306001443644, 001443644

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JAN 01, 196300-144-364427851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

HEXAGON FLATS

Cross Reference | NSN 5306-00-144-3644
Part Number Cage Code Manufacturer
AN177H5288044AERONAUTICAL STANDARDS GROUPDEPT OF NAVY AND AIR FORCE
87T5280049DEPARTMENT OF THE AIR FORCE
Technical Data | NSN 5306-00-144-3644
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.437 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.625 INCHES MINIMUM AND 0.703 INCHES MAXIMUM
FASTENER LENGTH5.328 INCHES MINIMUM AND 5.375 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH
HEAD STYLE HEXAGON
HEAD HEIGHT0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.615 INCHES MINIMUM AND 0.627 INCHES MAXIMUM
HOLE CONFIGURATION STYLE HEXAGON FLATS
HOLE TYPE DRILLED
HOLE QUANTITY1
HOLE DIAMETER0.070 INCHES NOMINAL
GRIP LENGTH4.672 INCHES MINIMUM AND 4.703 INCHES MAXIMUM
GRIP DIAMETER0.4362 INCHES MINIMUM AND 0.4367 INCHES MAXIMUM