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.
Dept. of the Air Force 
Republic of Korea Classification: Bolts and bolts and their nuts or washers exported in the same shipment
NSN 4140-00-711-8354
NSN 6220-01-438-9673
NSN 5855-01-267-2751
NSN 5950-01-391-3749
NSN 5835-01-234-3524
NSN 5910-01-383-9786
NSN 5930-01-296-0903
NSN 6320-01-232-4664
NSN 5915-01-412-4272
NSN 6645-01-331-5674
NSN 5990-01-443-2931
NSN 6240-01-357-7182