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 6650-01-502-9842
NSN 5895-00-118-3152
NSN 6150-01-417-8066
NSN 5975-01-025-1870
NSN 5960-01-010-3083
NSN 2925-01-628-7580
NSN 5935-01-573-0994
NSN 6620-01-632-9143
NSN 5996-01-161-4882
NSN 5998-00-998-4971
NSN 6240-00-952-9561
NSN 5835-01-338-5176