Questions and Answers for Teks #10 x 3/4 in. External Hex Flange Hex-Head Self-Drilling Screws (150-Pack)

A:  Hi MichiganDAN, this is Scott from the Teks product team. We currently do not have data to support the use of this product in a wood substrate. We recommend using our #9 Teks Roofing screws with sharp points for attaching corrugated panels to wood. If you have any additional questions, please feel free to call us at (877) 489-2726 or email us at CS@itwbrands.com

A:  Absolutely. I have used hundreds of these to attach metal mailboxes and they are flawless.

A:  not for the wood you need the wonthat has fine point drill firt thr meta and screw then

A:  5/16 is the screw head size, 1/4 is the bit size used to drill the hole before installation.

A:  Hi OzTheGreatandPowerful, this is Scott from the Teks product team. The #10 x 1-1/2" uses a 5/16" drive.

A:  Overall length is 1". Threads only extend about 10/16".

A:  The stated length includes the cutting tip.

A:  5/16" Hex

A:  5/16 hex nut driver

A:  These fasteners are designed to tap and fasten up to 12 Ga. Steel.

A:  The Teks 2-3/4" Wood-to-Metal fasteners would be a better option for fastening 2x4's to a van floor. The part number is: 21384 and link below: https://www.homedepot.com/p/Teks-12-2-3-4-in-Phillips-Flat-Head-Self-Drilling-Screws-40-Pack-21384/100145370

A:  I will only say that these are my "go to" screws for most if not all my uses. I would suggest buying a box, and trying them. If not what you want, you can return them.

A:  I attached unistrut to the 5/16" H-beam flange. no breakage. This is my first time to use self-tapping screws and I was very impressed.

A:  When drilling through something that thick and using these, I will normally use a regular drill bit and drill a hole first, then run these in with the drive bit. I use a drill bit that is bigger than the built in bit, but smaller than the "threads" of the screw. It works very well and I think I've only run into issue once or twice over the years.....and probably because I didn't drill a large enough hole first.

A:  yes

A:  Yes, the 2019 Buildex catalog contains Teks values on PDF Page 6, Catalog Page 5. Please refer to the link below. http://www.itwbuildex.com/pdf/buildex_catalog_2019.pdf

A:  I would not use these in that situation. They can be convenient for mounting into a blind hole, but a drilled hole with a 1/4-20 size "nut-sert" that installs with a pop rivet style tool would probably be more secure. The strongest would be a grade 5 nut and bolt, but I'm guessing you cannot get at the backside. Grade 8 bolts have a higher tensile strength, but are also more brittle.

A:  NO, you can not use them, the I-beam maybe too thick to screw the screw through it

A:  Yes you were just have to pre drill the hole 1st into the I Beam

A:  not recommended

A:  I chose the hex screws largely because the.package said metal to metal.

A:  Certainly.