Bottle Cap Threads

[deltaenterprizes]

I have a Harrel’s Precision benchrest powder measure that uses a plastic bottle for a reservoir.
I would like to thread a piece of plastic tubing to use instead of a bottle.
The major diameter is 2.045” and the threads are very coarse.
Is anyone familiar with bottle cap threads?

[country gent]

I think you can find them in Machinery's Handbook under rolled threads

[GregLaROCHE]

Some bottles and caps have a double thread so they can close faster.

[G W Wade]

I bought an adapter from Sinclair International that mounted on my RCBS Uniflow measure. Liked this because I never had to remove the powder from the original container preventing mix-ups. I check Sinclair to see if they could help but the no longer handle this item, They offered different adapters and different bottles I thought might have helped GW

[alfadan]

They are a butress thread I think.

[jsizemore]

I have a Harrel’s Precision benchrest powder measure that uses a plastic bottle for a reservoir.
I would like to thread a piece of plastic tubing to use instead of a bottle.
The major diameter is 2.045” and the threads are very coarse.
Is anyone familiar with bottle cap threads?

The folks at Harrell's are a phone call away. Lynwood has been real easy to talk to....if he's still around. 504-380-2683.

[deltaenterprizes]

jsizemore you had a bit of dislexia!
The area code should be 540!
You had me thinking that they are located in New Orleans!

[akajun]

one of the Youtube machinists I think Robrenz made a spray mister system that uses water bottles, he discussed the thread type in the video. IIRC he ground his threading bit for it.

[ulav8r]

I have seen many types of threads on plastic bottles, very few alike.

[Handloader109]

I would do as I do on my dillon. Take a plastic bottle cap that threads on the loader, drill a hole or melt a hole through it to fit the tubing. I use plastic tube, but if copper or aluminum, you can probably flare to hold inside the cap

Sent from my SM-S908U using Tapatalk

[super6]

I think you can find them in Machinery's Handbook under rolled threads

Yes on the machinery's handbook, You could make a space shuttle with all the information. LOL

[Sig]

If you know someone into 3d printing, they could print an adaptor that threads into the measure & allow the tube to slip into it.