Pullout strength of T-nut style inserts?

[Docta]

Im trying to do some research on the actual pullout strength of T-nut style snowboard inserts from a ski.

Ive been using a binding riser system with excellent success on my skis and four inserts, just like is standard on skiboards, but want some firm data...

Even on kids going huge in park and doing some huge jumps on ski boards Ive never heard of a pullout, I have only seen failure on snowboards when the entire board cracks in half.

The maximum stress on a ski is theoreticaaly much less than a snowboard, as the releasable binding limits force on the ski unless all the force is straight down....

Here is a link to pullout strength of screws in various ski configurations. Note that the inserts are top mounted retrofits, NOT the same as t-nut under the core style, so are not the same as what Im asking about.

http://www.telemarktalk.com/phpBB/viewtopic.php?t=34239

I read somewhere that k2's inserts were rated at around 2500# which intuitively seems about right, as a reasonable value for a simple screw is about 500# , but I am looking for some firm data. I imagine the threads might strip before the tnut actually breaks down the entire matrix of the ski.

[Jakester]

No firm numbers but I’ve heard the 2500# rating too for a 4 hole pattern. There was also something about the Burton 3 hole pattern. The pull out was higher or lower but I’m not sure which. I believe it was higher.

[powderho]

The dude from Ramp Skis just told me that the industry standard for screw retention was 200lbs. His skis took 600lbs to pull out the screws. Granted these are just screws, not screws and inserts.

[Jakester]

O I was referring to a snowboard tee nuts.

[Richuk]

Have you looked at the data to confirm the force require to strip the t-nut. You should be able to find this, or at least get points of reference from a supplier/manufacturer - doesn't have to be ski specific, as the t-nut doesn't use a specialised thread.

[Brazen]

My ex-wife...I called her tnut. It was extra hard to pull her out of my life. Almost killed me. Anything with that name is probably really strong, like, check the material data sheets and figure the molar equivalents. Really? More force than YOULL ever bring to bear on it...unless...this is a class action lawsuit research project. "Let's see: resort:manufacturer:materials: ahhhhhhh TNUTS!" Any ideas? I tripped over one this one time...