NSN 5306-01-337-3264

Part Details | CLOSE TOLERANCE BOLT

5306-01-337-3264 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: MS21297H10025, 5306-01-337-3264, 01-337-3264, 5306013373264, 013373264

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53APR 12, 199101-337-326427851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

DOUBLE HEXAGON FLATS

Cross Reference | NSN 5306-01-337-3264
Part Number Cage Code Manufacturer
MS21297H1002596906MILITARY STANDARDSPROMULGATED BY MILITARY DEPARTMENTS
Technical Data | NSN 5306-01-337-3264
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.6250 INCHES
THREAD QUANTITY PER INCH18
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH1.005 INCHES NOMINAL
FASTENER LENGTH2.567 INCHES MINIMUM AND 2.597 INCHES MAXIMUM
HEAD STYLE1 HEXAGON
HEAD HEIGHT0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM
EXTENDED WASHER DIAMETER1.153 INCHES MINIMUM AND 1.163 INCHES MAXIMUM
EXTENDED WASHER THICKNESS0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM
HEAD MINOR DIAMETER0.673 INCHES MINIMUM AND 0.688 INCHES MAXIMUM
HOLE CONFIGURATION STYLE8 DOUBLE HEXAGON FLATS
HOLE TYPE DRILLED
HOLE QUANTITY4
HOLE DIAMETER0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM
GRIP LENGTH1.552 INCHES MINIMUM AND 1.572 INCHES MAXIMUM
GRIP DIAMETER0.623 INCHES MINIMUM AND 0.624 INCHES MAXIMUM
SPECIAL FEATURESHOLE DRILLED IN TOP CENTER OF HEAD-0.470/0.519 IN DIA X 0.180 IN NOM DEEP
END ITEM IDENTIFICATIONPACER DAWN