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.
Classification: Zirconium and articles thereof nesoi
NSN 5996-00-111-3379
NSN 4140-01-199-4589
NSN 6320-01-021-6633
NSN 5945-00-933-7995
NSN 5965-01-227-9937
NSN 6645-01-237-2568
NSN 5950-01-100-1079
NSN 5910-01-192-8881
NSN 5985-00-938-0506
NSN 6145-00-375-5224
NSN 6320-01-616-0843
NSN 5910-01-229-5391