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 6320-01-340-4112
NSN 2925-01-430-4206
NSN 5998-01-234-4238
NSN 6240-01-251-3796
NSN 5910-00-036-6648
NSN 4140-01-394-1306
NSN 6150-00-081-2063
NSN 6645-01-578-6309
NSN 2925-01-647-7225
NSN 6145-01-323-3971
NSN 5925-01-073-3682
NSN 6610-00-888-6731