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 5895-00-194-4875
NSN 5985-01-631-4163
NSN 6650-01-449-1413
NSN 5965-01-632-7929
NSN 6105-00-927-5039
NSN 5975-01-461-0799
NSN 6110-01-134-1685
NSN 6650-00-127-4581
NSN 5965-00-015-7408
NSN 5998-01-462-0025
NSN 6220-01-299-3301
NSN 6150-01-160-6489