Design with tek screws
Design with tek screws
(OP)
Has anyone worked with Tek screws.
I need to know the diameter and propeties for those screws.
If i am using #14 tek screws, how do i go around calculating the my required loads, the screw can bear.
what does # in 14 means.
I also needed to know the size / diameter for those screws..
I need to know the diameter and propeties for those screws.
If i am using #14 tek screws, how do i go around calculating the my required loads, the screw can bear.
what does # in 14 means.
I also needed to know the size / diameter for those screws..






RE: Design with tek screws
RE: Design with tek screws
and what does # in tek stand for...
is it like rebars in steel..
RE: Design with tek screws
I believe TEK just means it is meant for metal to metal connection.
RE: Design with tek screws
www.itwbuildex.com
RE: Design with tek screws
I've found about 50 websites that sell "TEK" screws. Are they all just vendors for Buildex?
RE: Design with tek screws
RE: Design with tek screws
RE: Design with tek screws
Maybe you guys are right, but it seems to be a more generic term for self-drilling, self-tapping metal screws like spats says.
RE: Design with tek screws
To design with them, you can refer to manufacturer-supplied data that is usually based on testing, but not necessarily. Alternatively you can use your material standard. If these are for cold-formed steel connections you would use the NASPEC if you're in North America. It is you'll find different limit states to be checked with which you can arrive at a final design value for shear, tension, pull-out and pull-over. If you are not in North America, see if you have a similar standard to use.
RE: Design with tek screws
RE: Design with tek screws
But i went to http://www.itwbuildex.com/304ssbondedtek.htm
and got tension and shear values..(i still have to figure out which values i have to use if i am using a particular tek screws)
But is there not reductions for spacing and edge distances for tek screws..
RE: Design with tek screws
i did go to http://www.itwbuildex.com/304ssbondedtek.htm
and found information about the tek screws (pg 48)
RE: Design with tek screws
RE: Design with tek screws
There is no shear and tension values for Tek #14..at SSMA catalog
RE: Design with tek screws
RE: Design with tek screws
Staed, look at another manufacturer or calculate the value. No. 14 is pretty big btw. Below are reports for both Grabber screws and Hilti screws (they list no. 14). Compare the two.
ICBO 5280 Grabber screws
ICBO 2196 Hilti Kwik-Pro
ICBO 1976 ITW Tek
Note that the Tek screw report does not give you test values for conditions other than the screw itself, using the same nomenclature as the NASPEC. The report instead refers you to the NASPEC to calculate shear and tension and so on.
RE: Design with tek screws
RE: Design with tek screws
RE: Design with tek screws
RE: Design with tek screws
Sometimes you'll need to think about the drilling point also. When fastening to structural steel (red iron) for isntance, a #5 drilling point is probably best. It's a different style point that's harder and longer for drilling through the extra steel, and often this screw will also have finer threads, such as 24 tpi. You can callout a #12 TEK screw, or just #12 screw, #12-14, #12-12 screw and so on. Personally I don't include the thread pitch unless it's important for some reason and the same with the drilling point. If I don't need a specific drilling point then I don't bother with crowding my notes further.
RE: Design with tek screws
RE: Design with tek screws
RE: Design with tek screws
RE: Design with tek screws
Call them self-drill/self tap screws and give the required performance.
We have a job at the moment where the installer looked at a drawing calling for "Tapcon or similar" fixings and has substituted gas fired nails. In this case, the fault clearly lies with the installer, but it illustrates the need to be very very explicit.
RE: Design with tek screws
RE: Design with tek screws
Most of the vendors sell or rebrand the ITW Buildex TEK screws. For Buildex and several others the TEK # will have a chart telling you what the maximum steel thickness the screw can self tap into.