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 6610-01-468-0679
NSN 5925-00-764-1105
NSN 6130-01-204-5137
NSN 2925-01-338-5157
NSN 6130-01-142-9670
NSN 5996-01-094-9754
NSN 5855-01-444-9182
NSN 5950-00-228-4428
NSN 7035-01-248-8596
NSN 5965-00-549-0220
NSN 6320-01-220-2264
NSN 5945-01-611-3485