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 5910-01-078-6579
NSN 6220-00-857-2958
NSN 6145-00-775-0786
NSN 6150-01-141-7749
NSN 6220-00-981-3057
NSN 6685-01-004-6182
NSN 5960-01-453-0999
NSN 5975-00-943-9939
NSN 5930-01-310-5896
NSN 5990-01-612-5323
NSN 5910-00-850-3210
NSN 6135-01-512-8740