Thread modified major diameter 0.3678/0.3730; min energy absorption 240 ft/lb; min test veloci type 16.5 ft/sec
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.
Classification: Cobalt, wrought, and articles thereof
NSN 5920-00-679-7852
NSN 5950-01-240-6380
NSN 5960-01-577-5682
NSN 7035-00-929-0363
NSN 5945-00-643-9255
NSN 6320-00-519-0770
NSN 6645-00-819-5045
NSN 6620-01-568-9203
NSN 6645-01-633-1852
NSN 6110-01-188-6683
NSN 6650-01-144-1843
NSN 6135-01-539-5098