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 6130-00-302-7823
NSN 6620-00-280-2874
NSN 5960-00-545-5957
NSN 6320-01-399-6177
NSN 5945-01-239-9691
NSN 5905-01-366-1110
NSN 6150-01-187-3987
NSN 5930-01-229-2969
NSN 5910-00-110-3218
NSN 5999-01-602-1128
NSN 5910-01-527-0098
NSN 5975-00-775-0209