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 6620-01-314-3635
NSN 6610-00-586-4276
NSN 5985-01-097-0971
NSN 5915-00-906-9788
NSN 5905-00-906-3138
NSN 5895-01-345-5954
NSN 6240-01-069-2688
NSN 5990-00-244-8684
NSN 5895-01-374-2091
NSN 5855-01-449-8685
NSN 5835-01-229-6964
NSN 6320-01-166-3602