Dash
size
BSPP
thread
M,
in.
A,
in.
B,
in.

2 1/8-28 0.38 0.418 0.276 4 1/4-19 0.51 0.570 0.394 6 3/8-19 0.65 0.609 0.531 8 1/2-14 0.82 0.726 0.650 12 3/4-14 1.04 0.805 0.866 16 1-11 1.30 0.883 1.102 20 1 1/4-11 1.64 0.945 1.417 24 1 1/2-11 1.87 0.962 1.654 32 2-11 2.34 1.102 2.126  Dash
size
BSPP
thread
M,
in.
A,
in.
B,
in.

2 1/8-28 0.38 0.315 0.295 4 1/4-19 0.51 0.433 0.409 6 3/8-19 0.65 0.472 0.551 8 1/2-14 0.82 0.551 0.689 10 5/8-14 0.90 0.630 0.760 12 3/4-14 1.04 0.630 0.902 16 1-11 1.30 0.748 1.130 20 1 1/4-11 1.64 0.787 1.449 24 1 1/2-11 1.87 0.866 1.681 32 2-11 2.34 0.984 2.150