Lyman 55?

[Three44s]

This Screw? I think it's Lyman Part Number 7990290 (no longer available)

Attachment 317998

Here it is out of the measure. Note the tip has the threads turned off.

Attachment 317997

I checked the threads and they are 8-32 which is a common machine screw.

You should be able to go down to the local hardware store and look in the boxes in the bolt aisle and find a thumb screw. I'm posting from McMaster (which is great for all kinds of stuff) but a little screw like this would be $15 shipping probably....not something I usually do.

If you are like me you have an old coffee can of bolts and screws that you will dump out and go through first and 1 in 10 chance find it......

https://www.mcmaster.com/products/sc...ead-size~8-32/

You can chuck it in a lathe and turn the tip or a drill press and use a file to do the tip maybe. If you use brass you might not need to do that. You shouldn't be tightening this thing all that much

The original screw is steel, but you can get brass or aluminum (I'd get brass if available), the brass is soft and shouldn't dig in the cylinder.

If anyone loses the large screw, it's some odd thread (maybe a #10, but it's finer that 32, maybe 36, I do think Lyman used 10-36 screws which are real oddballs).

Good luck.

JW

If someone needed a 10-36 screw here is a potential path to that:

https://www.msdiscounttool.com/catal...ucts_id=100711

If that is indeed what they are ....

Three44s

[j4570]

It probably is. I might even have a 10-36 die but I think it’s a 12.

You can sometimes in a pinch thread over existing threads and get it to work ok for something like this where it’s a light load on the screw.

[Three44s]

I have a Lyman 55 bought in a package deal that needs both drop tubes. I wonder if there is a 3D print out there as one of my nephews has a printer.

If I recall correctly Lyman does not list them any longer.

Three44s