A titanium fastener (US English) or fastening (UK English) is a hardware device that mechanically joins or affixes two or more objects together. In general, titanium fasteners are used to create non-permanent joints; that is, joints that can be removed or dismantled without damaging the joining components. Welding is an example of creating permanent joints. Titanium fasteners are usually made of titanium, titanium alloy.
Types:

Titanium Bolt

Titanium Nut