Black dye or paint on thread end
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.
Classification: Zirconium and articles thereof nesoi
NSN 5960-00-597-2680
NSN 6220-01-400-0637
NSN 6620-00-147-6034
NSN 5965-01-332-1931
NSN 6150-01-382-3890
NSN 6610-00-946-6146
NSN 5835-01-536-6241
NSN 6240-01-495-5499
NSN 6645-00-843-8837
NSN 5920-00-846-5729
NSN 6240-01-300-0742
NSN 5996-01-258-5327