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 5835-00-034-4976
NSN 5920-01-279-4359
NSN 5905-01-274-2255
NSN 5895-01-573-7542
NSN 6650-01-231-2082
NSN 6650-01-090-6133
NSN 5910-01-170-0540
NSN 6220-00-077-0050
NSN 6145-01-364-0346
NSN 6135-00-369-2368
NSN 5905-00-356-7976
NSN 5930-00-757-4317