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 6620-01-328-2971
NSN 6150-01-410-7218
NSN 6220-01-147-7219
NSN 6130-00-714-6275
NSN 6145-01-181-6198
NSN 5925-01-613-5869
NSN 5990-00-551-1315
NSN 5935-01-414-5222
NSN 5975-01-276-9300
NSN 5915-01-515-0134
NSN 6620-01-535-0070
NSN 5985-01-526-3787