Catalog number

Size in inches

Size in mm

21-FS SHORT TAPER NUT

21-FS-06
21-FS-08
21-FS-10
21-FS-13
21-FS-19

1/4
5/16
3/8
1/2
3/4

6
8
10
13
19

30-F REDUCED TAPER NUT

30-F-0806
30-F-1006
30-F-1008
30-F-1310

5/16 x 1/4
3/8 x 1/4
3/8 x 5/16
1/2 x 3/8

8 x 6
10 x 6
10 x 8
13 x 10