Zhuocheng 1/4" X 1-3/8" Mate Rivet,

Access to both sides of the work is required, however it does not require close tolerance holes. The Tubular Component is inserted from one side and the Rivet is inserted from the other. When set, the Rivet expands inside the Tubular Component and clamps tightly and securely without crushing the parent material. Mate rivet has a very wide grip range.
Rivet-Mates two piece mate rivets are often used to fasten Highway signs, construction signs, and Street Traffic signs because they are tamper resistant. Once set in place these Rivet-mates securely fasten the application and would have to be drilled out.

 Advantage

Reliable, vibration, tamper resistant joint that won't torque out or loosen like threaded products.

Mate rivets Clamps securely without crushing parent material.

Non-Critical hole size allows for easier application preparation & drilling methods.

Use standard, hand held, or power rivet tools for easy fastening.