The S1021Z6-6 is a #6 aircraft-grade self-tapping pan head screw used primarily in light aircraft interior and airframe applications, especially in Cessna-type structures. It is designed for fastening thin sheet metal, interior panels, fairings, and non-structural components where a small, vibration-resistant fastener is required.

It uses a Phillips drive pan head and a self-tapping thread, allowing it to cut or form its own mating thread in pre-drilled holes in aluminum or thin aircraft sheet metal. This eliminates the need for a nut in low-load installations.

Key features include:

Aircraft standard S1021 series fastener
Size: #6 diameter × 1/2 inch length (Z6-6 configuration)
Pan head design (rounded, low-profile head)
Phillips drive
Self-tapping thread for sheet metal and light alloys
Typically cadmium-plated or corrosion-resistant steel
Used in aircraft interior panels, access covers, and light airframe parts
Common in Cessna airframe and cabin installations
Designed for vibration resistance in non-structural applications