All bolts are stretch bolts. The ability of a bolt to hold tension is called, I recall from college physics, is its "Young's modulus." This is the ability to absorb distortion and still return to its original shape on a molecular level. In any use that really needs this question to be answered, aluminum "stretch" bolts can be used zero times. Holding hinges on your screen door is one thing. Holding anything that vibrates, rotates, wants to move, etc. is another thing.
Bob