NOS Hose Clamps for 1953-1972+ Corvettes for sale. In 1974 I went to all of the companies that supplied GM with hose clamps. They were all still in business and I ordered thousands of clamps. Everyone thought that I was crazy! By 1990 all of these companies were out of business. Call Bill Mock #93 at (918)333-0748 or (918)214-5206 for your needs.