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 5920-01-032-0445
NSN 4140-01-152-2672
NSN 5915-01-394-6055
NSN 5915-00-074-0142
NSN 6685-01-444-1496
NSN 6220-01-446-6430
NSN 5855-01-461-8169
NSN 5905-00-469-7359
NSN 6150-00-601-1411
NSN 4140-00-116-1022
NSN 5999-01-389-0011
NSN 6240-01-432-0819