No they are only for cutting you need to purchase a specific tool that Home Depot sells for crimping it may accomplish what you're looking to do.
Yes. Very easily
Most likely they will but I would not recommend that you buy these as there of poor quality as the jaws are not hardened enough to do the job you will be asking these cutters to do.
Absolutely not. I bought it for that purpose an it was a real joke when I opened an spread the jaws tried to cut my lock an the blade steel just bent as they the cutting steels in the jaws weren't even hardened sufficiently or were they manufactured from a hardened steel. I ended up taking them back.