Looking for a captive nut of a different variety
Looking for a captive nut of a different variety
(OP)
I have an application where I am joining two plastic panels around the perimeter. We're using bolt,nut, lock washer, and plastic washers but it's way too many pieces. We've tried using u-nuts but in this application we don't like the gap between the panels created by the leg of the u-nut.
(To be clear, a U-nut looks like this: http://www.trfastenings.com/pages/multi+thread+u+n...)
I'm looking for something similar that is sized to slide over both panels together and would allow me to finish the joint with a single wing screw without separate washers. For what it's worth, in this case I'm looking for an M6 nut, stainless material, and 6-8mm thickness of the two panels together)
Does this widget exist and have a name? If so, who might supply such a widget at 2000pcs / year?
Thanks in advance,
David
(To be clear, a U-nut looks like this: http://www.trfastenings.com/pages/multi+thread+u+n...)
I'm looking for something similar that is sized to slide over both panels together and would allow me to finish the joint with a single wing screw without separate washers. For what it's worth, in this case I'm looking for an M6 nut, stainless material, and 6-8mm thickness of the two panels together)
Does this widget exist and have a name? If so, who might supply such a widget at 2000pcs / year?
Thanks in advance,
David





RE: Looking for a captive nut of a different variety
Ted
RE: Looking for a captive nut of a different variety
Going along that line of thinking, it could be done with a custom u-nut.
David
RE: Looking for a captive nut of a different variety
Mike Halloran
Pembroke Pines, FL, USA
RE: Looking for a captive nut of a different variety
That is an interesting idea. However I don't see a cable tie as functionally same, at least in this case.
A cable tie might keep the panels together but it will not hold preload and it will be more prone to wear/tearing if the plastic panels flex. In my case we are exposed to outdoor environment where heavy winds are present and I need a rugged connection.
An additional factor is the cover must be readily removable in the field for maintenance and the fastener is expected to be re-useable. Cable ties do not meet that expectation and would have a poor appearance.
RE: Looking for a captive nut of a different variety
Mike Halloran
Pembroke Pines, FL, USA
RE: Looking for a captive nut of a different variety
David
RE: Looking for a captive nut of a different variety
you can also use adhesive nut-plates, "Click bond", but they can be fussy about surface treatments.
RE: Looking for a captive nut of a different variety
RE: Looking for a captive nut of a different variety
RE: Looking for a captive nut of a different variety
http://shop.stafast.com/catalog/standard-short-pro...
RE: Looking for a captive nut of a different variety
rb1957: yes, I am not considering it for reasons of reassembly and the fact that the dirty side of the rivet will remain exposed to operators.
badservo: A t-nut could work but my gut tells me those prongs might be too severe. It warrants a test however, and a design with mild enough prong engagement could work nicely.
RE: Looking for a captive nut of a different variety
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Looking for a captive nut of a different variety
RE: Looking for a captive nut of a different variety
Or you might look at rack nuts. http://www.google.com/search?hl=en&q=rack+nuts...
RE: Looking for a captive nut of a different variety
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Looking for a captive nut of a different variety
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Looking for a captive nut of a different variety
RE: Looking for a captive nut of a different variety
Maybe you can try the "Rivets Screw" http://www.anixtercomponents.com/ ;or Similar ITW parts。