When the Civil War story happened, it pitted Captain America and Iron Man against each other. Iron Man was in favor of Superhuman Registration so heroes would be held responsible for their actions, while Captain America opposed it feeling it took away freedoms. Tony Stark, aka Iron Man, convinced Spider-Man to side with him and gave him the “Iron Spider” suit as a show of good faith.
The Iron Spider suit had 3 retractable metal appendages that had things like cameras and other useful tech in them good for spying on criminals, but weren’t super strong, thus were not to be used for fighting. It could also change to look like several other pre-programed looks, such as Spider-Man’s classing red and blues, the black suit, or even nothing at all. It also granted Spider-Man the ability to glide short distances.
The only problem with the suit, is that it also allowed Iron Man to study Peter Parker’s abilities and skills while he wore it, as it sent data back to him. When Peter eventually decided he didn’t agree with the way Tony was going about things and after several heroes were killed, the two started fighting. Iron Man used an override code to disable Peter within the Iron Spider suit, but thankfully by that point Peter had become suspicious of it and had already figured this out and added in his own passcode to disable Iron Man’s commands.
The Iron Spider suit took severe damage while Spider-Man tried to escape to Captain America’s side, and once he was there, he changed back into his regular red and blue costume. He never wore it again.
The Iron Spider suit did reappear being used by 3 individuals working as a team of “Scarlet Spiders” after the events of Civil War as part of the Superhuman Initiative. In fact they were clones of a hero called MVP who had been killed. Two of these clones were later killed, and the remaining clone, Patrick, then revealed his identity which lead to the shutting down of the hero training facility.