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 5925-01-139-3151
NSN 5990-00-816-1580
NSN 4140-00-139-5799
NSN 5915-01-233-2090
NSN 5975-00-738-0211
NSN 5975-01-562-3222
NSN 5910-00-518-1477
NSN 5905-01-474-4079
NSN 5990-01-133-0351
NSN 5930-00-012-8400
NSN 5960-01-201-5804
NSN 6130-00-396-1118