The tenon is inserted into a through-hole mortise, and a firm hammer blow on the wedge breaks it free and drives it into the slot. This expands the tenon and locks it tightly into the mortise ...

Doosan has expanded the versatility of its DX63-3 to DX255LC-5 excavators with the addition of eight main pin clamps and seven pro-link wedge lock clamps. Compatible with wedge lock buckets and ...

Obviously, the video above is aimed at marketing the company’s fancy wedge-locking washers, and it’s pretty clear that they work well. But why do they work when a simple lock washer fails?