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 5999-01-482-6132
NSN 6135-01-319-5567
NSN 6320-01-493-4472
NSN 6220-01-317-8069
NSN 5925-00-111-1969
NSN 5855-00-014-5008
NSN 5895-01-178-0523
NSN 6150-00-387-3045
NSN 6130-01-087-0514
NSN 6320-01-177-3192
NSN 5910-00-185-5742
NSN 5920-00-080-5827