Replace it. There about 24.00, you don't need a key to replace it. and if you drill it
you have to replace it,so save your time. If your trying to rob a house you can get a pick set at a lock smith.
Depending on the size and construction, I've found it easier to open with a 6 lb. maul/hammer and a crowbar. But if you must drill here are some ways. Get a diamond tipped drill bit, drill bit extension and learn the proper angle for drilling. There are some faster ways on the first link that accompanies this. Hire a Safe Technician to do the drilling as it's cheaper than having them open it other ways.
Start with a small bit, about 1/4 inch. Drill all of the way through. Move up one bit size and enlarge the hole. It may take three or for bit changes for the lock to come apart.
To safely and effectively drill out a lock cylinder, you should use a high-quality drill with the correct size bit. Start by drilling in the center of the keyhole at a slow and steady pace. Be careful not to apply too much pressure to avoid damaging the drill bit or the lock mechanism. Once you have drilled through the cylinder, you can remove it and replace it with a new one. It is important to wear protective gear and follow all safety precautions while drilling out a lock cylinder.
Drill bits are not universal. You choose the size of the drill bit according to the size of hole you like to make.
For a cut tap the correct drill size is a #17 drill, which has a diameter of .173 inches.
The recommended drill size for tapping threads with an M3 tap is 2.5mm.
The size of the drill bit you should use for your project depends on the size of the hole you need to drill. Check the project specifications or use a drill bit sizing guide to determine the appropriate size for the job.
That size is 8-32. The drill bit for a clearance hole is 11/64, or a #17 drill bit.
You are not expressing the size correctly. -There is NO 054. -If you mean 0.054 of an inch, then the nearest drill size is a #54 drill, which is 1.397 mm thick.
The recommended drill size for a 12 screw is 5/32 inches.
The recommended drill size for a 0-80 tap is 56.
The standard size of a 6mm drill bit is 6 millimeters in diameter.