I have red 262 or Permatex #26240 for heavy duty stuff. 270 is a bit overkill as well. In reality 243 is a good choice for the task and that's what I used. In either case thread must be clean and dry.
Red is often stated to be the choice but it's way beyond what's needed and while it can be broken free with heat, it's best left for permanent assemblies.
Ron