Thread: Aluminium Sleeve Needed

Originally Posted by DocBug

Hi Everyone,.

Looking for someone that can turn an adapter for me in aluminum. Based in Melbourne and a reasonable price please. Job should take less than two hours all up as it is just a threaded sleeve needed. Please message me if possible.

Thanks
Alan

Hi Alan, a bit more details might help. Length, diameter,wall thickness, type of thread - plain/ tapered, are you supplying material etc.
Kryn

Hi Kryn

OOps that was a bit silly of me, my apologies, it's a sleeve with an inner thread female of 3/4" - 16 and an outer of 3/4" NPT I have been told . ID of the thread socket is 0.908". Length of 0.6". All material to be supplied by machinist. If it is easier a shoulder of 0.25m" can be left on the one side. Hope that's clear, I'm not that good at describing unfortunately.

Thanks
Alan

Alan, I find it interesting that you say "you are not very good at describing the job" but you state quite confidently that "Job should take less than two hours all up as it is just a threaded sleeve needed".

In my experience most trades people, be they machinists, plumbers or electricians do not respond very well to a request for a quote under those conditions.

I am hoping an hour per thread cut, perhaps I'm over hopeful....

Not too many people will have a 3/4 NPT die to cut the thread... it is a very simple job otherwise.... cut material to length, drill and tap end... Put a 3/4 bolt in the chuck and screw workpiece onto that and turn to size, then thread... job done.. Supply concrete warranty with job... warranty only applies while it is on your concrete...

Hi Alan
I am having difficulty grasping what you are asking for. 3/4" ID thread and 3/4"OD thread and .6" long doesnt make sense to me!

Roger

Hi Roger,

I suspected it may have to be cut on the lathe rather than a die.

Thanks for the reply

Alan

Originally Posted by rogerbaker

Hi Alan
I am having difficulty grasping what you are asking for. 3/4" ID thread and 3/4"OD thread and .6" long doesnt make sense to me!

Roger

The OD is a 3/4NPT thread... The actual OD is 1.050"

A couple of questions -
Firstly, why Al? Brass is easier to thread and I think I've seen more pipe threads in brass than Al.
Secondly, (if I understand the part) it is a hollow ring with threads on the inside and outside. How will it be installed? There is not much to hang onto.

Michael

Hi Michael,

I was thinking Al because I was told it is easier to work with, I never considered brass. If the sleeve has a shoulder or flange, it could butt up against that and I would use some loctite. If that was not an option, I could drill and tap a couple of grub screws into the fitting it screws into and use that. do you think that 15mm too short for the threaded section to hold ?

Thanks
Alan

Without knowing the application 15mm should not be a problem. I was more wondering how you would install the sleeve in the socket it would go into.

Michael

I assume that if the job was to be done on the lathe (including both threads) then a TTA would be needed since NPT is a tapered thread. Simon

If it's not critical and it doesn't seem to be a taper could be cut first and then a parallel thread turned.

Originally Posted by pipeclay

If it's not critical and it doesn't seem to be a taper could be cut first and then a parallel thread turned.

I can't see how that would help.