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 6685-01-430-1940
NSN 5965-00-242-0001
NSN 5835-01-544-5183
NSN 5855-01-046-7273
NSN 5835-01-317-8700
NSN 5905-01-477-6016
NSN 5965-01-545-0539
NSN 6220-01-396-7636
NSN 5935-01-310-8616
NSN 5975-01-112-3125
NSN 5895-01-147-2931
NSN 5930-01-367-1857