Bearing surface of head to be grooved to 0.323 in. Min 0.325 in. Max dia, 0.050 in. Min 0.055 in. Max 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 6685-01-488-9839
NSN 6105-00-767-3686
NSN 5915-00-476-7093
NSN 5905-00-269-5452
NSN 6240-01-510-9299
NSN 5999-01-509-8874
NSN 5990-01-229-3003
NSN 5920-00-898-3090
NSN 5945-00-244-1212
NSN 6645-00-070-5927
NSN 6620-00-593-5313
NSN 5945-01-576-8492