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.
Dept. of the Navy Classification: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)
NSN 6130-01-634-0603
NSN 5960-01-254-3541
NSN 6620-01-453-2825
NSN 5945-01-599-4910
NSN 6645-01-531-4918
NSN 6645-00-097-9269
NSN 5990-01-348-2497
NSN 5895-01-538-1225
NSN 6685-01-160-7313
NSN 6650-00-945-9105
NSN 6130-00-205-1714
NSN 5945-00-526-0310