Round head
Countersunk head
Flat round head
Straight-knurl
Shoulder
Open end
Closed end
Tubular end
GB/T 12615.4-2004
Closed end blind rivets with break pull mandrel and flat round head-Property class 51
GB/T 12616.1-2004
120° Closed end blind rivets with break pull mandrel and countersunk head-Property class 11