The Accufast Tri Fold is a specialized splitting aluminum rivet fastener well-suited for use within oversized holes and repair applications. Its wide, three-point bulbing action makes it ideal for installation in thin or low-strength materials such as aluminum, fiberglass, and plastic. Unlike other bulbing blind fasteners, the Tri Fold has a unique sealant applied between the bolt and sleeve. This sealant oozes into the joint during installation, completely filling any gap and ensuring water resistance.

For aesthetic consistency, shaveable variants allow repairs to look similar to original equipment installations.