Flat round head
Reduced shank
Normal shank
Shoulder
Full thread
Cone point
GOST R55738-2-2013
Welding-Studs and ceramic ferrules for arc stud welding-Types PD-Threaded stud-Table 2
GOST R55738-3-2013
Welding-Studs and ceramic ferrules for arc stud welding-Types RD-Threaded stud with reduced shaft-Table 3