Heat treated and plated
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 
Dept. of the Navy 
Germany 
Republic of Korea 
Greece 
Turkey Classification: Bolts and bolts and their nuts or washers exported in the same shipment
NSN 6240-01-252-1544
NSN 6240-01-443-6597
NSN 6145-01-555-0000
NSN 5975-01-550-0136
NSN 5835-01-180-9441
NSN 5996-00-008-3266
NSN 5975-01-537-4831
NSN 5935-01-341-3317
NSN 5930-01-440-4923
NSN 6610-01-282-3225
NSN 5999-01-452-7617
NSN 5960-01-515-4791