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 5996-01-186-5671
NSN 6650-01-181-6037
NSN 6685-01-519-0675
NSN 5945-01-502-7266
NSN 6685-01-131-3222
NSN 5945-01-660-5405
NSN 6105-01-113-7039
NSN 5925-00-100-5760
NSN 5910-01-566-4366
NSN 5925-01-382-9313
NSN 6220-01-559-5925
NSN 5920-01-227-1877