Internal drive ribbed
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: Bolts and bolts and their nuts or washers exported in the same shipment
NSN 6650-01-466-5997
NSN 6135-00-497-0491
NSN 5935-00-827-0493
NSN 5985-00-584-3795
NSN 5930-01-580-6582
NSN 6685-00-291-7857
NSN 5895-00-940-0435
NSN 6110-00-419-9810
NSN 5965-01-350-1890
NSN 4140-01-603-7259
NSN 5965-00-954-3011
NSN 6685-00-623-7839