NSN 5306-01-372-9402

Part Details | CLOSE TOLERANCE BOLT

5306-01-372-9402 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: 98923, 989-2-3, 5306-01-372-9402, 01-372-9402, 5306013729402, 013729402

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53MAR 23, 199301-372-940227851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

UNDERCUT HEXAGON

Cross Reference | NSN 5306-01-372-9402
Part Number Cage Code Manufacturer
989-2-382005ALLARD NAZARIAN GROUP, INC.DBA GRANITE STATE MANUFACTURING
Technical Data | NSN 5306-01-372-9402
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH18
THREAD CLASS2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.531 INCHES NOMINAL
FASTENER LENGTH1.812 INCHES NOMINAL
HEAD STYLE5 UNDERCUT HEXAGON
HEAD DIAMETER0.747 INCHES MINIMUM AND 0.749 INCHES MAXIMUM
HEAD HEIGHT0.200 INCHES NOMINAL
DISTANCE FROM CENTERLINE TO FLAT0.2970 INCHES MINIMUM AND 0.3075 INCHES MAXIMUM
GRIP LENGTH1.281 INCHES NOMINAL
GRIP DIAMETER0.3106 INCHES MINIMUM AND 0.3115 INCHES MAXIMUM
SPECIAL FEATURES0.062 IN. WIDE SLOT,0.531 IN. DEEP ON THREADED END