Hex machine
screw nuts
For Hex
Nut screw opening
size diameter Number* (inches)
0 .060 5 5/32
1 .073 5 5/32
2 .086 6 3/16
3 .099 6 3/16
4 .112 8 1/4
5 .125 10 5/16
6 .138 10 5/16
8 .164 11 11/32
10 .190 12 3/8
12 .216 14 7/16
1/4 .250 14 7/16
5/16 .312 18 9/16
3/8 .375 20 5/8
*See fixed handle drivers catalog numbers with or without prefix P, HS,