NSN 5306-00-279-4354

Part Details | CLOSE TOLERANCE BOLT

5306-00-279-4354 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: NAS126127D, NAS1261-27D, 5306-00-279-4354, 00-279-4354, 5306002794354, 002794354

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53AUG 12, 197300-279-435427851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5306-00-279-4354
Part Number Cage Code Manufacturer
NAS1261-27D80205NATIONAL AEROSPACE STANDARDSCOMMITTEE AEROSPACE INDUSTRIES
Technical Data | NSN 5306-00-279-4354
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.562 INCHES
THREAD QUANTITY PER INCH18
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.486 INCHES MINIMUM AND 0.536 INCHES MAXIMUM
FASTENER LENGTH2.184 INCHES MINIMUM AND 2.214 INCHES MAXIMUM
HEAD STYLE HEXAGON
HEAD HEIGHT0.281 INCHES MINIMUM AND 0.296 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM
GRIP LENGTH1.678 INCHES MINIMUM AND 1.698 INCHES MAXIMUM
GRIP DIAMETER0.5610 INCHES MINIMUM AND 0.5615 INCHES MAXIMUM
SPECIFICATION/STANDARD DATA80205-NAS1261 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD