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 6145-00-669-6795
NSN 6130-00-506-8959
NSN 6240-00-686-5345
NSN 6150-01-365-6399
NSN 5990-00-682-3531
NSN 6650-01-079-1608
NSN 5965-00-451-0518
NSN 5935-01-499-5611
NSN 5915-01-415-3100
NSN 5910-01-556-4278
NSN 6240-01-394-5697
NSN 5965-01-516-6130