Hex chamfered single face
Hex with flange
Raised countersunk head
12-point
Hex with hole
Hex cap Low
Hex with shoulder
Hex chamfered double faces
Hex cap with collar
Hex spherical flange
Tubular end
Semitubular end
Conical spring washers
GB/T 13807.3-2-2008
Type CP cover nuts(d≥64mm)-Table 2
GB/T 13807.3-2-1992
Type CG cover nuts(d≤56mm)-Table 2
Type CG cover nuts(d≥64mm)-Table 2
Type CP cover nuts(d≤56mm)-Table 2
