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 Classification: Bolts and bolts and their nuts or washers exported in the same shipment
NSN 6105-01-619-4528
NSN 6685-01-356-3564
NSN 2925-01-285-7163
NSN 5999-01-580-2009
NSN 6105-00-248-5772
NSN 5985-01-071-3111
NSN 6320-01-141-1665
NSN 5999-01-462-0333
NSN 6620-01-359-3920
NSN 6240-01-251-6621
NSN 5905-00-520-5053
NSN 2925-01-653-9571