Bearing surface of head grooved to 0.472 in. Min 0.474 in. Max dia, 0.115 in. Min 0.120 in. Max lg from top of head
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 5975-01-388-2752
NSN 5999-01-492-6171
NSN 5855-01-556-7130
NSN 5905-00-794-4446
NSN 6130-01-234-1230
NSN 6110-01-441-9617
NSN 6320-01-592-6248
NSN 6240-01-206-4809
NSN 6135-00-491-9864
NSN 4140-00-500-2718
NSN 4140-01-058-5123
NSN 5965-00-722-7574