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 5950-01-020-7717
NSN 6650-00-307-3437
NSN 6145-01-608-2904
NSN 5945-00-833-5143
NSN 6135-01-304-8652
NSN 5960-01-543-0235
NSN 5965-01-573-5021
NSN 6610-00-317-5860
NSN 6650-01-053-8726
NSN 6130-01-109-3050
NSN 5950-00-419-1907
NSN 5975-00-722-1954