Galvanized Hex Nuts
Threads in Inches
1/4"-20
5/16"-18
3/8"-16
7/16"-14
1/2"-13
9/16"-12
5/8"-11
3/4"-10
7/8"-9
1"-8
1 1/8"-7
1 1/8"-8
1 1/4"
1 3/8"-6
1 1/2"-6
1 3/4"-5
2"-4 1/2"