0.253" hole diameter 0.480" outside diameter 0.028" material thickness w/additional key prebent located 180 degrees from peening key, distance from centerline to inside of prebent key 0.437 in., prebent key length 0.188 in. oxide film surface treated key
3b thread class right-hand 20 thread quantity per inch 2 holes 90 deg apart 0.061 in. min 0.064 in. max dia on 1.188 in. dia b.c., self-locking cadmium surface treated