Round head
Countersunk head
Raised countersunk head
Cheese
Low cheese head
Raised cheese
Cheese with hole
Small plain washer
Plain washer
Large plain washer
Spring washer
Ex-teeth serrated washer
Conical spring washers
In-teeth washer
Ex-teeth CSK washers
Ex-teeth washer
Curved spring lock washer
Wave spring washer
GB/T 9074.10-1988
90° Cross recessed raised countersunk head screw and countersunk serrate lock washer assemblies
Q 242-1999
Cross recessed raised countersunk head screw and countersunk serrate lock washer assemblies
Q 242-2012
Cross recessed raised countersunk head screw and countersunk serrate lock washer assemblies
