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 5950-01-443-6364
NSN 5998-01-523-6744
NSN 5910-01-395-7528
NSN 7035-01-088-6415
NSN 5985-01-426-8726
NSN 5930-01-224-5795
NSN 5950-01-218-7967
NSN 5905-01-514-6861
NSN 5999-00-529-0157
NSN 6105-00-445-7843
NSN 6650-00-698-5869
NSN 5996-01-457-2001