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 6320-00-343-1798
NSN 6105-00-152-3825
NSN 6145-01-317-2686
NSN 7035-01-005-5459
NSN 5920-01-094-7284
NSN 6650-01-246-0213
NSN 6645-01-599-2311
NSN 5990-01-066-5227
NSN 5935-01-244-2886
NSN 6620-01-062-2505
NSN 5998-00-972-7134
NSN 6135-01-223-3869