Certain species of beetles do have powerful jaws that bite. Other species such as the Blister beetle can produce a harmful chemical that will sting. Carpet beetles do not bite, but they can leave bite-like marks from their larvae which have fine, prickly hairs that impale into human skin.
There are some beetles that have large, powerful jaws which they use for fighting and attracting females, but not for biting. The Sap beetle is a biter. It is more commonly known to humans as it is also known as the Picnic beetle. This is because it is attracted to food and beverages.