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 5905-01-013-3676
NSN 6320-00-925-0558
NSN 6130-00-150-2372
NSN 6620-01-431-9176
NSN 5855-00-256-5562
NSN 5965-01-641-3563
NSN 5996-01-125-5781
NSN 6220-00-454-0286
NSN 5920-01-388-7293
NSN 6650-01-265-2672
NSN 5975-01-536-2385
NSN 5985-00-192-0384