Matchcode explanation

Art.-Nr.=06042201 (xxxxx201=Surface specification) - Bd=Collar nut - M4=Metric thread size 4mm - Across flats=8mm x Nut thickness=3mm x Collar diameter=6,7mm x Collar height=2mm Specials: SKT=Hexagon, MFC=Nut for comby, -05=Class 05