True or False: Fastener pins can be used with many different collars.

The assertion that fastener pins can be used with many different collars is true because fastener pins are designed to be versatile and compatible with a range of collars, allowing for flexibility in assembly applications. The interchangeability between fastener pins and collars is a crucial aspect in aerospace assembly, as it enables mechanics to choose suitable combinations that meet specific design requirements and tolerances. This compatibility across various collars streamlines the assembly process, making it more efficient and reducing the need for specialized parts.

While some collars may be designed for specific fastener pins, the broader principle in aerospace applications is to allow for multiple collar types to be used with a selection of fastener pins. This design philosophy supports standardization and enhances repair and maintenance operations, where having a common set of interchangeable parts can be highly advantageous. Therefore, the correct answer highlights the practical flexibility in using fastener pins across different collars in aerospace assembly.