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 6240-01-103-5300
NSN 5910-01-633-9963
NSN 5895-01-323-3686
NSN 6685-01-371-3050
NSN 6110-01-564-4235
NSN 6620-01-435-7083
NSN 6320-01-347-2638
NSN 6135-01-508-3784
NSN 5990-01-013-8464
NSN 5965-01-472-1997
NSN 6130-01-479-3051
NSN 5855-01-064-8961