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 6130-01-510-8870
NSN 5985-01-593-8954
NSN 5975-00-841-5857
NSN 6135-01-511-1975
NSN 5920-01-508-6562
NSN 5990-01-095-8866
NSN 6220-00-269-8396
NSN 6130-01-366-7481
NSN 5945-01-090-0610
NSN 5925-01-401-5314
NSN 6105-01-327-1195
NSN 6645-01-437-7770