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 5910-01-421-3340
NSN 2925-01-607-7754
NSN 5925-00-150-1072
NSN 5895-01-265-3103
NSN 7035-01-041-2754
NSN 6145-00-548-2997
NSN 5945-01-487-6446
NSN 5855-00-014-5008
NSN 5985-00-954-3207
NSN 5935-01-227-2829
NSN 6610-01-202-7404
NSN 5996-01-431-9335