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.
NSN 6650-00-197-7563
NSN 6685-00-849-5311
NSN 5855-00-256-5562
NSN 5945-01-521-0916
NSN 7035-00-631-3782
NSN 5915-01-655-6264
NSN 5905-00-318-2848
NSN 2925-01-549-8053
NSN 5920-00-893-4985
NSN 6650-00-627-1084
NSN 5855-00-586-6255
NSN 5998-01-100-1256