In structural projects, selecting bolt grades that align with tensile demands ensures safety, durability, and compliance. This guide explains match criteria, inspection steps, and practical choices for reliable joints in varied conditions, from light-frame construction to heavy load connections. Readers will learn to interpret marks, assess grades, calculate approximate forces, and verify compatibility with materials, threading, and coatings for predictable performance. The aim is to empower practitioners with a clear path to safer, more informed fastener decisions that stand up to real-world stresses.