What type of eyebolts have a shoulder and a fully threaded shank?

The type of eyebolts that have a shoulder and a fully threaded shank are categorized as machinery eyebolts. These eyebolts are specifically designed to withstand heavy loads and are commonly used in various industrial applications. The shoulder helps to distribute the load more evenly and reduces the risk of bending or breaking under stress.

Machinery eyebolts are typically made from high-strength materials, making them suitable for lifting applications where significant force is involved. Their fully threaded shank allows for greater flexibility in mounting and securing different types of loads, enabling them to be used with various thicknesses of materials or in tight spaces.

In contrast, other types of eyebolts, such as commercial, lightweight, and plastic eyebolts, are designed for different purposes and may not feature the same characteristics or load-bearing capacity as machinery eyebolts. They typically lack the shoulder or may not be intended for heavy-duty lifting tasks, making machinery eyebolts the ideal choice for robust applications in rigging and hoisting.