Many of the fasteners, like the screws for the rope pulley, are of
a thread dia. and pitch that is no longer available so be careful
with them as replacements cam be hard to come by.
Tubs.
When the subject of the unusual screw threads comes up, it’s instructional to post the ASME standard Screw chart. Take notice of sizes 12, 14 and 16 which are close in diameter to our common 1/4″ screws and all three of them came in 20 TPI pitch. Mistakenly substituting a 1/4″ for one of these can be a real problem.
Joe B