NH - Round headdimension (mm):6 x 40
6 x 45
6 x 55
6 x 60
6 x 70
...5 x 25
5 x 35
5 x 45
6 x 25
6 x 35

NH-Mdimension (mm):6 x 40 M6
8 x 60 M8

NH-Ndimension (mm):6 x 40
6 x 60
8 x 60
8 x 80
8 x 100

NHH - Mushroom headdimension (mm):6 x 45
6 x 55
6 x 60
6 x 70
6 x 80
...5 x 25
5 x 35
5 x 45
6 x 35
6 x 40

NHZ - Countersunk headdimension (mm):6 x 45
6 x 55
6 x 60
6 x 70
6 x 80
...5 x 25
5 x 35
5 x 45
6 x 35
6 x 40