yes indeed Sam the bellevilles, stiff though they may be are much more flexible the bolted joint itself, an excellent use for them!!!

See (An excellent resource and wonderful author) http://www.amazon.com/gp/product/0824792971/sr=8-1/qid=1145026090/ref=pd_bbs_1/002-5266171-6212834?%5Fencoding=UTF8

However these uses involve far less deflection than a spring can support typical used on a pipe support.