If you need to remove a six-point bolt but only have a 12-point socket, you may be tempted to try anyways, but there's some ...

They're so named because you need an Allen wrench (aka an Allen key or hex key) with a hexagonal socket ... to a stripped screw. Apply a couple of drops to the stripped screw head.

You have your screwdriver with you, only to find a hexagonal socket waiting ... Make sure the Allen wrench is inserted all the way into the head of the screw. It should sit at a nice 90-degree ...