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 6685-01-512-9982
NSN 6620-00-126-2998
NSN 5915-01-218-8244
NSN 6145-00-578-7522
NSN 5945-01-362-9696
NSN 2925-00-918-0859
NSN 5999-01-526-3834
NSN 6610-01-481-6260
NSN 6610-00-753-2281
NSN 5999-00-462-7911
NSN 6320-00-228-5678
NSN 6130-00-518-1723