Bolt Grades Explained: Grade 5, Grade 8 and Structural Bolts
Bolt grade chart with head markings and strengths, why Grade 8 is not simply better, and how structural A325 and A490 bolts differ from hardware grades.
Bolt grade chart with head markings and strengths, why Grade 8 is not simply better, and how structural A325 and A490 bolts differ from hardware grades.