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
GB/T 9074.13-1988
Cross recessed hexagon head bolt with indentation , spring and plain washer assemblies