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 5915-00-999-9137
NSN 5985-01-414-7473
NSN 5960-00-359-7768
NSN 6130-00-233-6197
NSN 6145-01-366-8205
NSN 5960-01-274-7628
NSN 5945-01-025-0991
NSN 6145-01-254-5468
NSN 5965-00-127-1660
NSN 5975-01-568-4563
NSN 6320-01-352-8084
NSN 6240-01-414-6074