You want the LM1117, not LM117 
Seems like LM117 is an LM317 in a metal can
(TO-3 or TO-39), iiuc. That’s pretty metal, but not very practical (unless you need an extreme temperature range).
EDIT: Older TI chips often use 1 for military grade, 2 for industrial, and 3 for commercial, with the main difference being temperature ranges. Seems TI no longer makes an LM217, but it’s available from others in case someone here prefers industrial over metal.