NSN 5306-01-066-0779

Part Details | CLOSE TOLERANCE BOLT

5306-01-066-0779 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: 121933632, 121933-6-32, 121933632, 121933-6-32, ST3M750632, ST3M750-6-32, 5306-01-066-0779, 01-066-0779, 5306010660779, 010660779

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53SEP 30, 197801-066-077927851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

DOUBLE HEXAGON

Cross Reference | NSN 5306-01-066-0779
Part Number Cage Code Manufacturer
121933-6-3217446HUCK INTERNATIONAL, INC.DBA ARCONIC FASTENING SYSTEMS AND
121933-6-3297928HUCK INTL INC
ST3M750-6-3280539SPS TECHNOLOGIES, LLCDBA AEROSPACE FASTENERS GROUP
Technical Data | NSN 5306-01-066-0779
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.375 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.447 INCHES NOMINAL
FASTENER LENGTH2.437 INCHES MINIMUM AND 2.457 INCHES MAXIMUM
HEAD STYLE DOUBLE HEXAGON
HEAD HEIGHT0.210 INCHES NOMINAL
WIDTH BETWEEN FLATS0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM
GRIP LENGTH1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM
GRIP DIAMETER0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM