What type of fit is required when inserting a Hi-Lok into the assembly?

When inserting a Hi-Lok into an assembly, a transition fit is required. This type of fit is designed to allow for a precise connection that accommodates slight variations in both the fastener and the assembly hole.

Hi-Loks are precision fasteners used in aerospace applications, and they require accurate alignment to ensure structural integrity and effective load distribution. A transition fit provides a balance where the fastener fits snugly enough to provide retention without excessive force during insertion. This is crucial because too much force could lead to misalignment or damage to components.

In typical applications, a transition fit allows for a combination of both clearance and interference, ensuring that the fastener can be installed with the exact amount of pressure needed for a secure fit while still allowing for some ease of assembly. Proper fit is essential in aerospace mechanics, as it directly impacts the performance and safety of the assembly.