https://www.boltdepot.com/fastener-information/measuring/us-tpi.aspx

Bolt Size Threads Per Inch (TPI)
Coarse Thread
UNC
Fine Thread
UNF
#0000 160
#000 120
#00 90
#0 80
#1 64 72
#2 56 64
#3 48 56
#4 40 48
#5 40 44
#6 32 40
#8 32 36
#10 24 32
#12 24 28
1/4″ 20 28
5/16″ 18 24
3/8″ 16 24
7/16″ 14 20
1/2″ 13 20
9/16″ 12 18
5/8″ 11 18
3/4″ 10 16
7/8″ 9 14
1″ 8 12*
1-1/8″ 7 12
1-1/4″ 7 12
1-1/2″ 6 12
* 12tpi is the UNF standard however 14tpi is far more common in actual use.