Bolt Grades and Head Markings:
Head markings on a bolt are a fast method to decide bolt grade. A few bolts will have extra markings that show the maker; the most valued bolts have clean heads with restricted markings.
Evaluation 2/Grade A
grade 2 steel bolt
Evaluation An and Grade 2 are the most widely recognized evaluations of zinc plated amalgam steel. Unfeeling low or medium carbon steel. No head markings (producers imprint might be incorporated).
