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 5930-00-146-4220
NSN 6240-01-616-3334
NSN 5965-01-536-6730
NSN 5910-00-805-4969
NSN 5985-00-275-5969
NSN 5905-01-587-0630
NSN 5945-01-214-6437
NSN 5910-00-138-9746
NSN 5950-01-412-0262
NSN 5925-00-259-7486
NSN 2925-01-633-4048
NSN 5905-01-084-7045