HERE WE HAVE FOUR HEX HEAD BOLTS, THESE ARE 3/8" UNF AND 3" LONG, 

HEAD MARKINGS---THREE EQUIDISTANT LINES---ABO [MAKER]---UNF[THREAD]---8.8[GRADE]

PLEASE SEE SECOND  PHOTO FOR HEAD MARKINGS

FINISH---SELF COLOUR  BLACK

205g