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 6320-01-441-1371
NSN 5895-01-505-9556
NSN 5998-01-550-2768
NSN 6130-01-338-5962
NSN 5905-01-388-4328
NSN 5965-00-964-1756
NSN 6105-01-562-3297
NSN 6145-01-598-2402
NSN 5855-01-393-2455
NSN 5998-01-526-6915
NSN 5998-01-563-4663
NSN 4140-01-340-9641