Screw Threads On Cowboy 4500

[Massive]

It is a ton easier to deal with some of these parts over ebay, if they have it...

I know what you mean about screws. I had to replace a serpentine belt tensioner on my previous truck and I went nuts, nothing I had would fit the cap screw. I went to the dealer, and they sorta shruged, and said is was either something like an 8.3 mm cap screw, or an 8.7. It is kinda crazy, but then what if the 8mm is too light, and the 9mm multiplied out over every part decision on the truck would make it miss it's EPA slot?

With sewing machines I think it is more a mater of their being pretty complicated compared to say a table saw. And there are a million parts going 100 mph, they build to the design and not the convenience of the home tech. Much of the tech in sewing machines looks really bad, stuff held to shafts by grub screws, really nasty. But they have to be that way, and they have them so at least those old SIngers would run for ever. Pretty amazing stuff. One has stuff running at 4000 stitches a minute, all day, and it does not shake loose, though everywhere there are just screws, no keyways or other structure.

I am currently trying to make some new knibs for my Sailrite sewing machine. The knobs it came with are cheasy, and they are not accurate, the stitch length control is very sloppy though it works because it is always loaded. But who know what kind of thread they are, they don't even match pitch keys .

[Anne Bonnys Locker]

As I read on another forum - the best thing about standards is that there are so many to choose from!

The variety of threads in machines is confusing and they are often a mix of metric and the Singer modified UNC.