Cross recess
Hex chamfered single face
Hex with flange
Hex chamfered double faces
Reduced shank
Full thread
Small plain washer
Plain washer
Large plain washer
Spring washer
Ex-teeth serrated washer
Conical spring washers
In-teeth washer
Ex-teeth washer
Curved spring lock washer
Wave spring washer
ASME/ANSI B18.13.1M-5-1998
Metric hex head screws and type L regular conical spring washers assemblies-Table 5
ASME/ANSI B18.13.1M-5-2003