Metric Locking Cap Nuts:

Drawing 1: capnutdw.jpg

All tolerances +/- .26mm
Item Number Description F H* REF.
05M040070LCN M4 X 0.7 7 8
05M050080LCN M5 X 0.8 8 10
05M060100LCN M6 X 1.0 10 12

Dimensions are in MM.