The 487-704 Cowl Stud is a threaded fastening component used in Piper aircraft engine cowl assemblies. It is designed to secure cowling panels to the airframe or engine structure, allowing for quick removal and reinstallation during maintenance and inspection procedures.

This stud provides a durable, vibration-resistant mounting point that helps ensure the engine cowling remains securely attached during flight while still being easily accessible for servicing.

Its primary functions include:

Securing engine cowling panels to the airframe
Allowing quick-release access for maintenance and inspection
Providing vibration-resistant threaded engagement in cowl assemblies

Cowl studs like the 487-704 are critical for maintaining both aerodynamic integrity and ease of maintenance access in aircraft engine compartments.