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 4140-01-384-4389
NSN 4140-01-128-0834
NSN 6620-01-452-4034
NSN 5950-00-131-9632
NSN 6150-00-891-7922
NSN 6650-00-796-9972
NSN 5835-01-136-3394
NSN 6645-00-891-3366
NSN 7035-00-483-8630
NSN 5950-00-005-2764
NSN 5996-01-287-8311
NSN 5996-01-356-2203