Steel Pull-Thru Rivets can surface flush on both sides.
FLUSH RIVET SET 1/4" AT109AP 12-01664
POP Steel Pull-Thru Double Flush Rivets with Steel Copper Plated Mandrel, 1000PK (SKK3035PT) | Zoro
First rivets = first blood | redrv7
Comparative Tests of the Strength and Tightness of Commercial Flush Rivets of One Type and NACA Flush Rivets in Machine-Countersunk and Counterpunched Joints - Page 8 of 16 - UNT Digital Library