ASTM A194 Hex Nuts | McMaster-Carr
About 10% wider and taller than standard hex nuts, these metric-sized heavy hex nuts distribute the load over a large area. Grade 2H nuts are comparable in strength to Class 12. 9 bolts. They're about 20% stronger than high-strength steel nuts and are used in heavy machinery, such as earth-moving equipment.. Fine threads are closely spaced to prevent …