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 5855-00-586-6255
NSN 6320-01-512-2031
NSN 5975-00-826-6648
NSN 5915-01-077-9096
NSN 6150-00-114-2785
NSN 5960-00-284-5234
NSN 5975-01-142-3723
NSN 7035-01-542-5972
NSN 5910-01-093-6327
NSN 6130-01-521-2207
NSN 6320-01-119-3935
NSN 5998-01-430-2773