All overhead hooks, chains, swivels, slings should be what grade?

• A. Grade 7
• B. Grade 8
• C. Grade 9
• D. Grade 6

Answer: (B)

When lifting overhead, the hardware you use must be strong enough to carry the load with a safe margin and to withstand shock and fatigue. The grade shown on overhead rigging parts communicates how strong the material is and ensures compatibility among hooks, chains, swivels, and slings. Grade 8 is the standard choice for these components because it offers high strength while remaining ductile enough to handle dynamic loads without brittle failure. This alignment of strength across all parts helps prevent a weaker link from compromising the lift. While higher grades like Grade 9 exist, Grade 8 is the typical, widely approved grade for overhead lifting gear in Navy and general rigging practice.