NSN 5306-01-384-3443

Part Details | CLOSE TOLERANCE BOLT

5306-01-384-3443 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: NAS6607D12, 5306-01-384-3443, 01-384-3443, 5306013843443, 013843443

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53DEC 14, 199301-384-344327851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

HEXAGON CORNERS

Cross Reference | NSN 5306-01-384-3443
Part Number Cage Code Manufacturer
NAS6607D1280205NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES
Technical Data | NSN 5306-01-384-3443
Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER0.4375 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.694 INCHES NOMINAL
FASTENER LENGTH1.429 INCHES MINIMUM AND 1.459 INCHES MAXIMUM
HEAD STYLE HEXAGON
HEAD HEIGHT0.764 INCHES NOMINAL
WIDTH BETWEEN FLATS0.678 INCHES MINIMUM AND 0.690 INCHES MAXIMUM
HOLE CONFIGURATION STYLE HEXAGON CORNERS
HOLE TYPE DRILLED
HOLE QUANTITY3
HOLE DIAMETER0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM
GRIP LENGTH0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM
GRIP DIAMETER0.4360 INCHES MINIMUM
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT