Arbor Thread - TPI or Pitch

1 1/4 in - 7
1/2 - 3/8 in
1/2 in - 13 UNC
1/2 in thread 7.375 threads per inch
1/4 in - 20
5/8 in - 11
5/8 in - 11 UNC
5/8 in-11 in
5/8-11 in
7/8 in
8 in - 32
M10 x 1.25
M18 x 1.5, 4 Lead