What type of load binder is attached to bomb support beams?

The correct answer is nylon. Nylon load binders are specifically designed for use with bomb support beams because of their strength, flexibility, and resistance to environmental factors. Nylon’s properties make it an ideal material for securing munitions, as it can handle significant loads while remaining lightweight and durable. Additionally, nylon's resistance to abrasion and moisture helps maintain the integrity of the load binder in various operational conditions.

Other materials, such as polyester and rubber, while having their own advantages, do not possess the same balance of strength-to-weight ratio and resilience required for the specific demands of securing munitions on support beams. Steel, on the other hand, is too rigid and heavy for this application, which could lead to complications in handling and transport. Thus, nylon is the preferred choice for load binders in this context.