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 6130-01-612-9115
NSN 5925-01-305-1415
NSN 5835-01-025-8761
NSN 5985-00-144-2176
NSN 5835-00-841-2650
NSN 4140-00-468-5342
NSN 7035-00-043-1325
NSN 6145-01-384-7508
NSN 6130-01-443-2448
NSN 6240-01-605-8096
NSN 6650-00-283-0978
NSN 5985-00-723-6740