Felony conviction 30+ years old

Is it possible to get a security clearance when there is a felony conviction that is over 30 years old? I was convicted of Aggravated Battery and served time but have not had any issues since.

Thanks in advance for your help!

If you spend less than a year in jail for the offense then it is mitigated by time and no offenses since then, there would be no reason to deny you a clearance.