NSN 5306-01-497-3998

Part Details | CLOSE TOLERANCE BOLT

5306-01-497-3998 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: NAS10853P, NAS1085-3P, 5306-01-497-3998, 01-497-3998, 5306014973998, 014973998

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53MAY 20, 200201-497-399827851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

CROWNED HEXAGON

Cross Reference | NSN 5306-01-497-3998
Part Number Cage Code Manufacturer
NAS1085-3P1E0F1ROLLS ROYCE CORP
Technical Data | NSN 5306-01-497-3998
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.375 INCHES NOMINAL
FASTENER LENGTH0.548 INCHES MINIMUM AND 0.578 INCHES MAXIMUM
HEAD STYLE6 CROWNED HEXAGON
HEAD DIAMETER0.578 INCHES NOMINAL
HEAD HEIGHT0.140 INCHES NOMINAL
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
GRIP LENGTH0.187 INCHES NOMINAL
GRIP DIAMETER0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
END ITEM IDENTIFICATIONKC-130J; KC-13J
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT, 100 DEG FLUSH HEAD "HI-TORQUE" RECESS TITANIUM ALLOY (SHORT THREAD)