The Crawling Hand
I remember watching this when I was 4 or 5. We lived over seas and didn’t get much American TV...don’t know why this was on. Anyway, it was late at night and my older sister and I were allowed to stay up and watch it....big mistake! I haven’t seen it since then. I was terrified for a long time and slept with a light on until early teens.
Here is a brief description of the movie I found online.
(1963) After an astronaut is blown to smithereens in outer space, his arm washes ashore on a California beach. Hitching a ride in a pre-med student’s car, it’s soon strangling all his visitors.