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 5990-01-238-1975
NSN 6610-01-051-3538
NSN 6650-00-907-1495
NSN 5935-01-095-4660
NSN 4140-00-063-2724
NSN 6240-01-388-2413
NSN 5855-01-351-6277
NSN 4140-00-827-1821
NSN 6220-01-596-3176
NSN 5920-00-084-6046
NSN 5920-01-474-5404
NSN 6620-00-613-3023