Non-magnetic thread inserts
Non-magnetic thread inserts
(OP)
Hi! I'm a researcher who has come to you all in the past, and you've always been a helpful bunch, so thanks.
We've got a large aluminum apparatus that needs absolutely non-magnetic thread inserts. We could use phosphor bronze or titanium. The only problem is that one particular company that will not be named wants all of our arms for the inserts. something on the order of 8$ per, as they've said, which seems a little extreme to me.
Is this standard pricing for "exotic" thread inserts? Who's your favorite thread insert distributor? I don't think it's a violation of posting policy to ask the latter question, but if it is, sorry, and feel free to send me a personal message with the response, if you are so inclined.
Thanks!
We've got a large aluminum apparatus that needs absolutely non-magnetic thread inserts. We could use phosphor bronze or titanium. The only problem is that one particular company that will not be named wants all of our arms for the inserts. something on the order of 8$ per, as they've said, which seems a little extreme to me.
Is this standard pricing for "exotic" thread inserts? Who's your favorite thread insert distributor? I don't think it's a violation of posting policy to ask the latter question, but if it is, sorry, and feel free to send me a personal message with the response, if you are so inclined.
Thanks!





RE: Non-magnetic thread inserts
There may be hidden costs associated with the type of fastener you choose. I.E. if you choose Ti inserts and need to use Ti fasteners, you'll need some kind of anti-seize film or lubricant to prevent galling. If this is a high-vacuum application, this may further limit your choices. The un-named manufacturer may be able to supply some kind of coating pre-applied to the helical insert to provide anti-seizing protection.
The manufacturer of the insert may be able to help choose something, as they've probably been approached about this subject before.
If you only need a handful of these inserts for a prototype or whatever, eBay has some phosphor-bronze Helicoil listings. The locking ones are nice, they have a couple threads that are slightly deformed to provide vibration-loosening protection, like using Loctite.
Beat to fit, paint to match.
RE: Non-magnetic thread inserts
A little more information as to size might generate a more specific answer.
You might want to checkout the Full-Torque thread repair device. I know they make them in Al.
I'm not going to tell how much we paid for 3/4" Titanium
thread recovery devices. $250 each I couldn't hold back.
These were not the Full-Torque Device.
http://www.yardleyproducts.com/
http://fulltorque.com/
RE: Non-magnetic thread inserts
You can easily get keenserts in 303/316 cres, if that material is acceptable.
Try Tridair or McMaster-Carr supply.
RE: Non-magnetic thread inserts
Else engage your department workshop to machine a few from the rod material.
_____________________________________
"The richer we have become materially, the poorer we have become morally and spiritually." Martin Luther King Jr
RE: Non-magnetic thread inserts
Have a look at this site:-
http://www.noblefix.com/helicoil.htm
desertfox
RE: Non-magnetic thread inserts
$8 each isn't that bad for something exotic. Especially if you know it will work. If you are that cheap why not tap the AL apparatus?
RE: Non-magnetic thread inserts
RE: Non-magnetic thread inserts
Can you increase the depth of the threads and simply forget about the inserts?
Can you use screws and nuts?
RE: Non-magnetic thread inserts
http://w
Ted
RE: Non-magnetic thread inserts
Thanks again!
RE: Non-magnetic thread inserts
Ted
RE: Non-magnetic thread inserts
If you can convert to "studs" in place of bolts, one wearing thread interface (screw>part) can be exchanged for another (stud>nut)