We've decided on machinig and welding a .25" OD x .125" ID to the hole. Opposed to threading the rod we will use a Swagelok fitting.
Thanks again, all of your inputs were appreciated.
Thank you all for your input.
NOTE: The pressure is roughly 60psi and currently the design is for a test rig.
For anyone who is interested, the design is for my senior capstone project, a needle-less injection device, where the cylinder in question will contain medicine (for the time being...
Without any preface here is the problem...
I have a 1" dia. stainless steel (for lack of better words) tank. There is a 0.25" dia. hole located on its side. The tank has an approximate wall thickness of 3/32". A fitting is needed to connect the 0.25" dia. hole to any standard NPT thread...