As it turns out the thread specification for bottle caps is maintained by the international.
Soda bottle cap thread size.
An inexpensive and quick way to attach soda bottles to pvc piping for use in many projects such as bottleponic hydroponic and aquaponic gardens toys experiments dispensers or whatever the imagination can come up with.
99 screw caps for 5oz woozy bottles pack of 30 4 6 out of 5 stars 49.
The s dimension is the key factor which determines the orientation of the closure to the bottle and the amount of thread engagement.
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What many don t know is how to make sure the cap is the right size for the bottle.
I need to make a ss cap to fit these bottles for a leak test that some of our scientist want to run.
Measured from the top of the finish to the top edge of the first thread.
Before you select a cap you need to know the correct size.
Measured from the top of the neck to the point where the diameter t extended down intersects the shoulder.
Some more keywords if google sees this.
Cap sizes are not interchangeable a 28 400 cap will not fit properly on a bottle with a 28 410 neck finish.
I made a valved top for a drinks bottle using the pco1810 thread see here for details.
Cap sizes and the neck finish on a bottle have a unique system of measurements.
The thread does not need to be a perfect match it just needs to stay tight.
The height of the neck finish.
