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 6135-00-050-7189
NSN 5910-00-483-0397
NSN 6110-01-616-3054
NSN 5945-01-085-8404
NSN 6145-01-283-1262
NSN 7035-01-211-5636
NSN 5935-01-596-7165
NSN 4140-01-156-5333
NSN 5999-01-084-6266
NSN 5965-01-619-5520
NSN 6650-01-209-6318
NSN 2925-01-629-9416