Round head
Flat round head
Cheese
T-head
Cup head square neck
Cup head nib
Cup oval neck
Low cheese head
GB/T 8262-1987
Bolts,round head with oval neck
GB/T 801-2021
Cup head square neck bolts with small head and short neck
GB/T 794-2021
Strengthened cup head square neck bolts-Type A
GB/T 794-2021
Strengthened cup head square neck bolts-Type B
GB/T 794-1993
Strengthened cup head square neck bolts-Type B
DIN 5903-1-2011
With round head and oval neck
