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 5855-01-092-7755
NSN 2925-00-555-0584
NSN 5998-01-023-8873
NSN 6610-01-331-2070
NSN 7035-00-870-0290
NSN 5965-01-527-1006
NSN 5920-01-543-3858
NSN 6645-01-235-0892
NSN 6130-00-691-5408
NSN 5965-01-486-1222
NSN 5930-01-529-1709
NSN 5920-01-286-8271