NSN 5306-01-178-8363

Part Details | CLOSE TOLERANCE BOLT

5306-01-178-8363 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: BACB30BH10C40, 5306-01-178-8363, 01-178-8363, 5306011788363, 011788363

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53MAY 10, 198401-178-836327851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5306-01-178-8363
Part Number Cage Code Manufacturer
BACB30BH10C4081205THE BOEING COMPANYDBA BOEING
Technical Data | NSN 5306-01-178-8363
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.625 INCHES
THREAD QUANTITY PER INCH18
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.475 INCHES MINIMUM AND 0.525 INCHES MAXIMUM
FASTENER LENGTH2.985 INCHES MINIMUM AND 3.015 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH130000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH85000 POUNDS PER SQUARE INCH
HEAD STYLE HEXAGON
HEAD HEIGHT0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM
GRIP LENGTH2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM
GRIP DIAMETER0.6234 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM