The weight limitations for any standoff will be determined by the material it’s made from, its size, and how it’s mounted. Bigger standoffs will have higher load capacities, and steel standoffs will have higher load capacities than plastic or nylon. Pin, rotating, rounded, and tapered are best suited for light-duty applications, while spring-loaded and tooling balls are better options for heavy-duty.  Furthermore, there may be customized standoffs, like rotating pins or spring-loaded tapered pins, with unique load capacities. You will need to check the product page or contact the manufacturer to better understand the load capacity of the standoff you’re interested in purchasing.