Screaming hysterically and calling you names is not the worse meltdown possible. These things are not going to hurt him or you.
Different things work for different kids and for the same kid at different times or different levels of overstimulation.
Mine can sometimes be brought down from a potential meltdown by tickling to make him laugh. Try this further up the overload scale and it would make things worse.
Sometimes a hug works,
Massaging his feet or his hands firmly can work.
Exercise, heavy work, jumping off high things onto something soft, all help calm in early stages.
Sniffing fairy liquid and playing with the reversible sequin t-shirt are calming too.
Playing on the phone and computer can work.
In full on meltdown. Stop talking, stop the noise nearby, remove from fluorescent light areas, help.
Sometimes a hug will work. Still sometimes he is restrained in a full body hug as letting go may result in serious injury to a person or damage to property that can cause injury ( Eg he is chucking stuff at the windows) this usually pisses him off more but better a pissed off louder screaming boy than a dead one.
Hugging often works accompanied by massage.
Good luck.