Dry film lubricant p.S. 18021 cl 1
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 5950-01-088-8154
NSN 5910-01-432-0126
NSN 5945-01-011-1075
NSN 6150-01-398-9850
NSN 6220-00-157-5009
NSN 5975-01-229-1874
NSN 5960-00-558-7557
NSN 6130-01-305-9126
NSN 7035-00-206-6123
NSN 5975-01-421-3653
NSN 5960-01-515-4791
NSN 6145-00-388-9084