... solution From left to right: Q series, Peel Type, MB-Bolt, Large Flange Type, IL series, Multi-Grip, Closed End TypeFrom ... HeadFlat/Countersunk HeadPeel TypeLarge Flange TypeMulti-Grip TypeClosed End Type Available Materials:AA: Aluminum rivets w/ Aluminum mandrels AS ... Stainless steelSteel Blind NutsAvailable in Hexagonal Shank, Large Flange, Countersunk & Reduced Head Types Blind Rivets