SAE AA SAE A SAE B SAE BB mm in mm in mm in mm in mm in
9 9 11 13 15
20/40 16/32 16/32 16/32 16/32
11.430 0.4500 14.288 0.5625 17.463 0.6875 20.638 0.8125 23.812 0.9375 Dfi 12.446 0.4900 15.558 0.6125 21.908 0.8625 25.082 0.9875