The Series 800 is a type of Terminator mass produced by Skynet. Individual Terminators within the series are often referred to as T-800's. The T-800 was Skynet's first cybernetic organism, with living tissue over a hyperalloy endoskeleton. This made it Skynet's first successful Infiltrator unit, capable of infiltrating the human resistance. The 800 series is the first in a line of Series 8xx Infiltrator Terminators, all of which used living tissue over hyperalloy endoskeletons. (Wiki)
Terminator T800 Part 1Terminator T800 Part 2
Terminator T800 Instructions