2a thread class right-hand 3.218" overall length 11 thread quantity per inch the ends of stud shall be chamfered 45 degrees to 50 degrees from a point 1/84 to 1/32 below the root diameter of the thread unc thread series
2a thread class right-hand 2.968" overall length 9 thread quantity per inch navy special project part to be shock tested per mil-s-901d unc thread series