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 6130-01-266-8040
NSN 5895-00-626-7495
NSN 6610-01-303-9516
NSN 6110-00-055-3691
NSN 6645-01-271-0248
NSN 5925-01-218-4711
NSN 6620-01-106-2814
NSN 5990-01-448-2751
NSN 2925-00-441-8252
NSN 5950-00-122-3644
NSN 5895-00-596-8678
NSN 5935-01-378-6847