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 6650-01-428-9958
NSN 6105-00-243-7952
NSN 6220-00-823-6688
NSN 5996-01-228-9306
NSN 5985-01-378-6363
NSN 5998-00-218-1360
NSN 4140-01-508-3514
NSN 2925-00-708-4332
NSN 6240-00-128-0267
NSN 6320-01-320-3305
NSN 5905-01-360-3031
NSN 5990-00-756-0215