gross diameter of bolt
nominal diameter + 1.5 mm
nominal diameter + 2.0 mm
nominal diameter of bolt
black bolt
ordinary unfinished bolt
turned and fitted bolt
high strength bolt
minimum dimension
average dimension
maximum dimension
none of the above
two times the weld size
four times the weld size
six times the weld size
weld size
1:01
1 : V2
V2 : 1
2:01