Glad to finally figure this out and find a source.

It took some time to uncover the gem that is 'Blacksmith Bolt and Rivet Company' and besides the fact that they were the only place on earth I could find these very specific screws, were incredibly helpful and specific about what they had in stock and delivered them super fast to Canada, they are patient for slow movers like me!

These screws are hard to find. Glad you had them in stock. Thanks

I was happy to find these as I needed an uncommon little screw to repair some vintage guitar tuners from a 1960 Gretsch guitar.

I was repairing a1959 Benjamin 310 pump pellet gun. I had a missing muzzle plug screw and the other was bent. It was a #4-36 oval head slotted screw. These folks had it in a larger quanity and cheaper than buying from others on line that only sold 2 screws. Shipment was fast and quality was great. I did have to trim the length but no big deal.