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 6145-01-506-4416
NSN 5999-00-686-4992
NSN 5895-00-075-7864
NSN 6220-01-216-5954
NSN 6130-00-763-6041
NSN 5855-00-482-9876
NSN 5990-00-899-1662
NSN 5999-01-381-2457
NSN 5965-00-368-8204
NSN 5998-01-473-8280
NSN 5905-01-634-0595
NSN 6620-01-481-1358