What component is threaded into the drill guide during assembly?

The correct answer is the bushing, which is threaded into the drill guide during assembly. In aerospace assembly processes, a drill guide is a precision tool that helps ensure holes are drilled to the correct alignment and depth. The bushing serves as a key component that provides a replaceable surface for the drill bit to guide through, ensuring accuracy and minimizing wear on the drill guide.

Bushings are specifically designed to accommodate the drill bit's diameter while allowing for smooth and precise drilling. They help maintain the stability and alignment of the drill bit during operation, which is crucial in aerospace applications where precision is paramount. By threading the bushing into the drill guide, it becomes securely integrated into the assembly, ensuring optimal performance and longevity of both the drill guide and the drill bit.

Other components listed, while relevant in different contexts, do not play the same role in the assembly of the drill guide. For instance, a drill bit is the actual tool used to create holes, not a component that gets threaded into the guide. The handle is typically part of a manual tool or machine, while the clutch is a mechanism that may control torque or engagement, but again not directly threaded into the drill guide itself.