This video popped up in my feed this morning. The 3, 4, and 6 are on the upper level, and I note that the 6 has an overly long piece of threaded rod (and I assume a double-nut fastening) in the place of a staple bolt:

Looking at the church page, there is a video from just after the re-installation. The 6 has what appears to be a more traditional staple bolt:

If we need to replace a staple bolt in the future, is threaded rod and double-nut construction a reasonable possibility? McMaster-Carr offers threaded rod in a variety of strength grades. Highest strength has a more limited selection, but the next step down appears to have anything we would want.