The Iron Spider Armor

Spidey got a brand-new Spiderman suit In the Civil War event series, debuted a red-and-gold Iron Spider costume designed by his then-boss and patron Iron Man. This costume featured three retractable mechanical limbs, which gave him a grand total of, um, seven limbs. Which was close enough, I guess.

The Iron Spider costume was a little less popular, owing perhaps to the fact that it was usually colored gold and maroon and included a pair of spats, and ultimately only lasted until about halfway through Civil War, when Spider-Man rebelled against Iron Man and changed clothes to prove it.