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 6150-00-952-7006
NSN 5945-01-442-3903
NSN 6130-00-936-9124
NSN 4140-01-331-5974
NSN 5910-01-512-1978
NSN 5910-01-467-5030
NSN 5950-01-533-4771
NSN 6135-01-368-0453
NSN 6110-01-588-2730
NSN 6650-00-098-6128
NSN 6220-01-364-9608
NSN 5950-01-122-4249