Where can I get some 7/16 threaded inserts in stainless steel? If these can not be bought how difficult would it be to put a thread into stainless tube if I got a 7/16 tap?
for odd things or one offs your best bet is to find someone local who can make them - to people with lathes this is one of the simplest things to do.
Stainless has to be the most God-awful material to work with, its hard to start with, picks up for a laugh and work hardens for an encore. Added to
that it distorts with heat (such as welding) to a huge degree, is shiny and doesn't go rusty. It does tarnish, depending on type, and is hard to
maintain a uniform finish on.
7/16 is a bit small for an internal turned thread, use a tap. Get a good tap, not one of the carbon steel ones, and I would recommend that the
internal diameter is bigger than the recommended tapping diameter. If you have to drill out the insert first then use lots of force with a slow drill
speed, and use plenty of lubricant. If you are planning to weld the insert then I would recommend running the tap down carefully after the welding.
Good luck.
Thanks for the replies. I know stainless is the most awful stuff to work with but that is what the cahssis is made of so I have to use it. The inserts are for top harness mounts and need to be welded through a chassis member and 7/16 is the harness bolt size so I want to use it.
Good news.... I have a lathe.
Bad news.... I don't have a tap.
If your can't get them anywhere I'm sure we could sort something out.
Just a thought. Is the 2B chassis 409 s/s?
If so, they would need welding with 309 or 312.
Paul G
quote:
Originally posted by 907
Good news.... I have a lathe.
Bad news.... I don't have a tap.
If your can't get them anywhere I'm sure we could sort something out.
Just a thought. Is the 2B chassis 409 s/s?
If so, they would need welding with 309 or 312.
Paul G
No problem Stu
Paul G