Hey everyone, i have never used uhmw and was just curious to how well uhmw holds threads? Can i use a machine screw, self tapping, or sheet metal screws?

Has anyone given these a try?
http://www.mcmaster.com/param/images/threaded/90598a027_fam.gif

Any recommend captive nuts?

Thanks

from what ive researched it doesnt take much to pull out the threads
everyone ive seen said to nuts and bolts or threaded nut bar

uhmw is really soft, which means you need really coarse threads. Trilobular plastite screws probably work the best - they're self-tapping screws specifically designed for use in plastic, with a very coarse thread with a special profile for gripping plastic. Sheet metal screws will not work the same.


http://www.mcmaster.com/param/asp/PSearch2.asp?reqTyp=parametric&act=psearch&FAM=tappingscrews&FT_6145=249281&FT_6150=249512&sesnextrep=382452884329952&ScreenWidth=1440&McMMainWidth=1235

Alex,

Use an insert with a flanged back if you are going to thread UHWM..... It is too soft to thread directly into..... It is good for bolting through and into something else but I would not thread it directly...... use a flanged back something like a tee nut for wood and insert it through the plastic.... it will hold tight and not elong if tight

Frisco