Knurled nut 104 series

plastic

3 mm, 5 mm, 6 mm, 8 mm, 10 mm
(0.12 in, 0.2 in, 0.24 in, 0.31 in, 0.39 in)

8 mm, 12.5 mm, 13 mm, 17.5 mm, 21.5 mm
(0.315 in, 0.492 in, 0.512 in, 0.689 in, 0.846 in)

4 mm, 6.5 mm, 7.5 mm, 10 mm, 12.5 mm
(0.16 in, 0.26 in, 0.3 in, 0.39 in, 0.49 in)