Steel Pull-Thru Rivets can surface flush on both sides.
Countersink Smooth Body Metric Rivet Nuts | JHP Monroe Fasteners
How Do Blind Rivets Work? - FastenerLab - Supplier/Advance Components
RivetKing® - Flush on Both Sides Blind Rivet: Size 8-14, Dome Head, Steel Body, Steel Mandrel - 56587959 - MSC Industrial Supply
Flush Riveting Tips - Glasair Aircraft Owners Association
Hot Sale Aluminum Stainless Steel-Aluminum Open End Dome Head Flush Mount Multigrip Blind Bulbing Rivets - China Rivets, Blind Rivet | Made-in-China.com