u/Serious-Two1950

Hi All, I am trying to find a movie which I watched when I was a kid in the late 80's I would say. All I can remember from it was these weird mechanical spider things that were trying to kill people (Kind of like the ones that were in the episode of Stargate (Replicators I think they are called). Now in the film i am not sure if they were meant to be spiders, crabs or what but its the only thing that I remember.