how old do you have to be to engage someone
No. The age of 12 years old is below the age of consent and illegal to enter into a contract of marriage. The age of consent in many states is 16 and in others is 18 at 12 thi â¦ s person is a minor child and can not sign or have a contract.he number of threads engaged can then be calculated from the number of threads â¦ per inch on the bolt. So if you are using a 1/4-20 bolt, meaning it has 1/4 diameter and 20 threads per inch, you should engage the bolt 1/4 into the hole, or 5 threads.