NSN 5306-01-531-6997

Part Details | CLOSE TOLERANCE BOLT

5306-01-531-6997 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: 75A2306412009, 75A230641-2009, 75A2306412009, 75A230641-2009, 5306-01-531-6997, 01-531-6997, 5306015316997, 015316997

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JUL 19, 200501-531-699727851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

DISHED HEXAGON

Cross Reference | NSN 5306-01-531-6997
Part Number Cage Code Manufacturer
75A230641-200976301BOEING COMPANY, THEDBA BOEING
75A230641-200981205THE BOEING COMPANYDBA BOEING
Technical Data | NSN 5306-01-531-6997
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER1.750 INCHES
THREAD QUANTITY PER INCH18
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.480 INCHES NOMINAL
HEAD STYLE3 DISHED HEXAGON
HEAD DIAMETER1.125 INCHES NOMINAL
HEAD HEIGHT0.180 INCHES NOMINAL
GRIP LENGTH1.120 INCHES MINIMUM AND 1.130 INCHES MAXIMUM
GRIP DIAMETER0.748 INCHES MINIMUM AND 0.749 INCHES MAXIMUM