A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. 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. The unthreaded portion is of specific 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. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.
Dept. of the Air Force 
Dept. of the Navy Classification: Bolts and bolts and their nuts or washers exported in the same shipment
NSN 6320-01-389-5853
NSN 6320-00-004-9158
NSN 5945-00-834-9859
NSN 6685-00-851-0515
NSN 5905-01-323-4054
NSN 5965-01-535-5789
NSN 5930-01-254-2616
NSN 5915-00-077-5555
NSN 6135-00-826-4798
NSN 5945-00-652-0836
NSN 5975-00-916-5940
NSN 5999-01-481-0132