NSN 5306-00-281-2583

Part Details | CLOSE TOLERANCE BOLT

5306-00-281-2583 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: AN174C12A, 932.19.60.446, 5306-00-281-2583, 00-281-2583, 5306002812583, 002812583

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53SEP 02, 199700-281-258327851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

HEXAGON

Cross Reference | NSN 5306-00-281-2583
Part Number Cage Code Manufacturer
AN174C12A88044AERONAUTICAL STANDARDS GROUPDEPT OF NAVY AND AIR FORCE
932.19.60.446S4080PILATUS AIRCRAFT LTD
Technical Data | NSN 5306-00-281-2583
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.367 INCHES MINIMUM AND 0.516 INCHES MAXIMUM
FASTENER LENGTH1.265 INCHES MINIMUM AND 1.312 INCHES MAXIMUM
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH
HEAD STYLE HEXAGON
HEAD HEIGHT0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM
GRIP LENGTH0.796 INCHES MINIMUM AND 0.828 INCHES MAXIMUM
GRIP DIAMETER0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM