|
Posted by Den on April 23, 2008, 4:50 am
Please log in for more thread options
> I've been trying to figure out the best way to do this for a few weeks
> now, and I haven't come up with anything I like yet. I'm working on a
> product where 4 pieces of 1/4" round aluminum need to be able to screw
> onto four sides of both 1 1/2" OD aluminum tube and 2" OD tube. Both
> tubes are .065. Picture a hat rack with the large tube being the
> center, but that's not what it is. These parts will be assembled by
> the buyer, so it has to be simple, and yes, it does have to be in
> separate parts... it can't be welded. Having nuts welded onto the
> inside of the tube would probably be best, but the tube is too long to
> do that. The best I can come up with is to just send a 4-40 machine
> screw all the way through the tube and two pieces of 1/4" at a time,
> and put a nut on the opposite side, but the proper lengths for the
> screws to do that don't seem to be standard in 4-40 size. It would be
> great to figure out a way to screw the rounds directly to each four
> sides of the center tube, but I can't think of a way to do it.
>
> Any mechanical geniuses have a good idea?
rubber Wellnuts (TM)?
|
|
Posted by Larry Jaques on April 23, 2008, 9:15 am
Please log in for more thread options
On Tue, 22 Apr 2008 21:44:21 -0700 (PDT), with neither quill nor
>I've been trying to figure out the best way to do this for a few weeks
>now, and I haven't come up with anything I like yet. I'm working on a
>product where 4 pieces of 1/4" round aluminum need to be able to screw
>onto four sides of both 1 1/2" OD aluminum tube and 2" OD tube. Both
>tubes are .065. Picture a hat rack with the large tube being the
>center, but that's not what it is. These parts will be assembled by
>the buyer, so it has to be simple, and yes, it does have to be in
>separate parts... it can't be welded. Having nuts welded onto the
>inside of the tube would probably be best, but the tube is too long to
>do that. The best I can come up with is to just send a 4-40 machine
>screw all the way through the tube and two pieces of 1/4" at a time,
>and put a nut on the opposite side, but the proper lengths for the
>screws to do that don't seem to be standard in 4-40 size. It would be
>great to figure out a way to screw the rounds directly to each four
>sides of the center tube, but I can't think of a way to do it.
>
>Any mechanical geniuses have a good idea?
Pemnuts should do the trick for you, Dave.
http://www.psminternational.com/html/..%5Cpdf%5Cusa-FLUSH-SELF-CLINCHING-BUSHES.pdf
or
www.mcmaster.com catalog page 3150
--
Happiness in marriage is entirely a matter of chance. If the dispositions
of the parties are ever so well known to each other or ever so similar
beforehand, it does not advance their felicity in the least. They always
continue to grow sufficiently unlike afterwards to have their share of
vexation; and it is better to know as little as possible of the defects of
the person with whom you are to pass your life.
-- Jane Austen, Pride and Prejudice, 1811
|
|
Posted by Larry Jaques on April 23, 2008, 9:18 am
Please log in for more thread options On Tue, 22 Apr 2008 21:44:21 -0700 (PDT), with neither quill nor
>I've been trying to figure out the best way to do this for a few weeks
>now, and I haven't come up with anything I like yet. I'm working on a
>product where 4 pieces of 1/4" round aluminum need to be able to screw
>onto four sides of both 1 1/2" OD aluminum tube and 2" OD tube. Both
>tubes are .065. Picture a hat rack with the large tube being the
>center, but that's not what it is. These parts will be assembled by
>the buyer, so it has to be simple, and yes, it does have to be in
>separate parts... it can't be welded. Having nuts welded onto the
>inside of the tube would probably be best, but the tube is too long to
>do that. The best I can come up with is to just send a 4-40 machine
>screw all the way through the tube and two pieces of 1/4" at a time,
>and put a nut on the opposite side, but the proper lengths for the
>screws to do that don't seem to be standard in 4-40 size. It would be
>great to figure out a way to screw the rounds directly to each four
>sides of the center tube, but I can't think of a way to do it.
>
>Any mechanical geniuses have a good idea?
Oops, I forgot one. I used to use one of these to put nuts in truck
doors for permanent mounting of large trailer mirrors.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=1210
--
Happiness in marriage is entirely a matter of chance. If the dispositions
of the parties are ever so well known to each other or ever so similar
beforehand, it does not advance their felicity in the least. They always
continue to grow sufficiently unlike afterwards to have their share of
vexation; and it is better to know as little as possible of the defects of
the person with whom you are to pass your life.
-- Jane Austen, Pride and Prejudice, 1811
|
|
Posted by Dave99 on April 23, 2008, 11:33 am
Please log in for more thread options Those are all great ideas guys, thanks a lot. I knew there had to be
something like that, but I couldn't find it. Sorry, I forgot to
mention that this is round tube for the center, not square. But I
would think one of these would still work though, right? Since it's
just a 4-40 size, the heads won't be that big on the round tube.
Dave
|
| Similar Threads | Posted | | Puzzle Nut | May 27, 2007, 1:35 pm |
| What kind of fastener is this? | August 29, 2007, 1:26 pm |
| Fastener Chart | September 4, 2008, 9:55 pm |
| Fastener advice needed | July 9, 2007, 1:57 am |
| Silken bronze fastener? | October 17, 2007, 5:28 pm |
| Bulk Fastener/shop organization update | April 21, 2007, 2:55 pm |
|
|
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap
> now, and I haven't come up with anything I like yet. I'm working on a
> product where 4 pieces of 1/4" round aluminum need to be able to screw
> onto four sides of both 1 1/2" OD aluminum tube and 2" OD tube. Both
> tubes are .065. Picture a hat rack with the large tube being the
> center, but that's not what it is. These parts will be assembled by
> the buyer, so it has to be simple, and yes, it does have to be in
> separate parts... it can't be welded. Having nuts welded onto the
> inside of the tube would probably be best, but the tube is too long to
> do that. The best I can come up with is to just send a 4-40 machine
> screw all the way through the tube and two pieces of 1/4" at a time,
> and put a nut on the opposite side, but the proper lengths for the
> screws to do that don't seem to be standard in 4-40 size. It would be
> great to figure out a way to screw the rounds directly to each four
> sides of the center tube, but I can't think of a way to do it.
>
> Any mechanical geniuses have a good idea?