Countersunk head
Raised countersunk head
Countersunk head square neck
Countersunk head with nib
Square countersunk head
Countersunk Cheese head
T-head countersunk
JIS B1179-1.1-1994
Slotted flat head bolt-Finished-Table 1-1
JIS B1179-1.2-1994
Slotted flat head bolt-Rough Table1-2
JIS B1179-3-2009
Slotted flat head bolt-Finished-Table 3
JIS B1179-4-2009
Slotted flat head bolt-Rough Table 4
