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 Army 
Dept. of the Air Force 
Dept. of the Navy 
Australia 
Germany 
Republic of Korea 
Netherlands 
Greece 
Turkey Classification: Bolts and bolts and their nuts or washers exported in the same shipment
NSN 7035-01-217-6263
NSN 5945-00-905-5749
NSN 5910-00-007-8191
NSN 5990-01-110-4841
NSN 6320-01-418-2611
NSN 5975-01-085-1081
NSN 5975-00-322-9865
NSN 6220-01-246-0277
NSN 6135-00-191-6444
NSN 6130-01-196-4545
NSN 5996-00-772-1956
NSN 6150-01-307-6132