Dry film lubricant p.S. 18021 lc 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 5965-00-905-6895
NSN 6130-01-176-5788
NSN 5996-01-294-7047
NSN 4140-00-974-0128
NSN 2925-01-629-9416
NSN 4140-01-243-0608
NSN 6135-01-364-2738
NSN 7035-00-585-2113
NSN 6135-00-835-7211
NSN 6105-01-520-5317
NSN 5965-01-553-4275
NSN 6220-01-312-0999