NSN 5306-01-289-9444

Part Details | CLOSE TOLERANCE BOLT

5306-01-289-9444 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: 11697A04U012, STSBG004A04U12, 5306-01-289-9444, 01-289-9444, 5306012899444, 012899444

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53DEC 03, 198801-289-944427851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

DOUBLE HEXAGON EXTENDED WASHER

Cross Reference | NSN 5306-01-289-9444
Part Number Cage Code Manufacturer
11697A04U01259563REID PRODUCTS INC.DBA REID PRODUCTS
STSBG004A04U1234742TYEE AIRCRAFT INCDBA DIVISION OF AVTECHTYEE, INC.
Technical Data | NSN 5306-01-289-9444
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.431 INCHES NOMINAL
FASTENER LENGTH1.181 INCHES NOMINAL
HEAD STYLE DOUBLE HEXAGON EXTENDED WASHER
HEAD HEIGHT0.234 INCHES NOMINAL
EXTENDED WASHER DIAMETER0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
GRIP LENGTH0.750 INCHES NOMINAL
GRIP DIAMETER0.249 INCHES NOMINAL
FEATURES PROVIDED CETYL ALCOHOL LUBRICANT
SPECIAL FEATURESHEAT TREAT TO 260 KSI FTU;TEMPERATURE LIMIT 900 DEG F