Retaining element in shank
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 5960-00-581-9719
NSN 5905-01-342-6147
NSN 6685-00-605-3241
NSN 6105-01-029-5753
NSN 5895-00-126-2621
NSN 5935-00-690-0434
NSN 6105-01-023-7887
NSN 7035-00-631-3782
NSN 5950-00-397-9869
NSN 5935-00-135-6163
NSN 5925-00-111-1969
NSN 6130-01-626-4144