Bearing surface of head grooved to 0.394 in. Min, 0.396 in. Max dia, 0.092 in. Min, 0.097 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 6320-01-255-2096
NSN 5960-01-090-9291
NSN 5855-01-334-6594
NSN 6240-01-035-6870
NSN 5975-00-027-8298
NSN 6110-00-155-0794
NSN 5905-00-753-0299
NSN 5935-00-012-4200
NSN 5950-01-033-2066
NSN 5855-01-437-6161
NSN 6685-00-516-2173
NSN 5960-00-875-4655