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 6130-01-397-5834
NSN 6620-00-313-9237
NSN 6150-01-608-2522
NSN 5996-01-257-2517
NSN 6620-00-463-7497
NSN 6685-00-999-1680
NSN 6135-00-240-3200
NSN 5915-01-262-8957
NSN 5990-00-689-5736
NSN 5990-01-411-8548
NSN 5945-01-122-6610
NSN 5935-00-357-3704