Do spiders scream?
Not as we know screaming. Spiders do not have vocal chords and breathe through book lungs rather than their mouths like us humans. Furthermore, most spiders are not social and only communicate to eachother when they want to mate or to ward off enemies. To do this, they stridulate, use vibrations from their legs, abdomen, or pedipalps, or use pheromone laden webbing. Since female spiders regularly eat males and their young, they couldn't care if their victims screamed or not. They might take a threatening fang bearing pose or release irritating hairs from their bodies. I am not sure if social spiders have some sort of warning communication for the spiders they share their web with, but I have a feeling that it is not screaming.
No, they don't vocalize in any way. They do, however, make sounds. Some vibrate their abdomens in a way that could be faintly audible; this is a signaling behavior used to communicate with prospective mates. Others "stridulate," or scrape stiff body parts against another surface to make a buzzing sound. The chelicerae, or jaws, might be involved. Some larger spiders can be heard to hiss when disturbed; again, it's the stridulation.