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 2925-00-580-4931
NSN 5930-01-410-3436
NSN 5855-01-218-3735
NSN 6130-01-259-3074
NSN 5996-00-202-5163
NSN 5925-01-004-9293
NSN 5998-00-542-7090
NSN 5945-00-883-7291
NSN 6240-00-226-0462
NSN 5998-00-814-1516
NSN 6650-00-170-5095
NSN 6645-00-984-7687