2.650" overall length 0.250" overall width left side d-shaped socket guide rotated 180 deg, right side d-shaped pin guide rotated 180 deg clockwise from normal
2a thread class right-hand 0.859" overall length 0.265" overall width 48 thread quantity per inch special screwlock hdw-stainless steel per fed spec s-763, type 303, passivated unc thread series