Bolt and nut set 304 Stainless Steel Rivet nut, Flat Head Cylindrical Pull Cap, Stainless Steel 304 Small countersunk Head Rivet nut Half Hexagon-M5( 50 Grains) Aluminum Material Bolts and nuts :
blind rivet nuts
LONG ARM RIVETING HAND TOOL PULL-LINK® PL-6N BLIND RIVET-NUTS RIV-BOLTS RIVNUT | eBay
Blind Rivet Nuts
M5 Steel Hex Body Flat Head Rivet Stud Bolt | Rivbolt