A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (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 designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.
Dept. of the Air Force Classification: Bolts and bolts and their nuts or washers exported in the same shipment
NSN 5920-01-104-2301
NSN 5950-01-446-6484
NSN 6145-01-517-2842
NSN 5965-01-382-3222
NSN 4140-01-406-6631
NSN 5950-01-217-4092
NSN 6650-01-619-8373
NSN 5960-01-248-4743
NSN 6685-00-284-2244
NSN 5945-00-173-4980
NSN 5895-01-364-0298
NSN 5895-01-020-7771