Do Screws Shear easier than Nails? Let's find out!

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  • Published on:  Monday, June 17, 2019
  • Shear strength of nails and screws is something to consider when selecting a fastener for a project. For building construction, building codes come into play and some screws, such as GRK (tested per viewer request), are building code approved for some applications. A total of seven different types of nails and screws are tested in 3 types of tests to determine shear strength of each type of nail or screws. Fasteners: GRK, deck screws, drywall screws, spiral shank, galvanized 16 penny, and 16D sinkers. I purchased all the products tested and am not sponsored by any company or brand.

    Thank you very much for supporting the channel by watching the commercials and through Patreon support.

    This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume the responsibility for the results. Project Farm LLC
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  • Brian H

    Brian H

     13 hours ago

    So in the end, its not that they are going to snap, its taht the wood will fail.

  • chuyg92


     23 hours ago

    I know this is off topic in regards to this video but have you ever thought about testing POR-15 as a bed liner or external coating?

  • Archive 3DO

    Archive 3DO

     23 hours ago

    Have you tried testing what concrete mixtures are the best? I want to build a small patio to work on my car to restore it but I want the best concrete mixture per cost so it will last.

  • Dan Bierschbach

    Dan Bierschbach


    im always struck by how you come up with the testing devices. so clever. well done sir.

  • deiselgas


     2 days ago

    Id like to see a shear test of various concrete anchors such as Tapan screws, lag bolt shields, expansion bolts ect.

  • Paul G

    Paul G

     3 days ago

    wow, those deck and GRK screws were interesting, they must be a hardened steel.

  • Kainoa Ladines

    Kainoa Ladines

     3 days ago

    Can you do a test on strength and corrosion resistance with nuts and bolts or metal anything in general. I want to see if you could show the difference with 316 stainless, 304 stainless, steel and galvanized. Preferably with fasteners. We all buy nuts and bolts. But I don’t know the value in stainless 316 vs 304 to be honest.

  • Amy Hepker

    Amy Hepker

     4 days ago

    Test Comealongs

  • Michael J. Caboose

    Michael J. Caboose

     4 days ago

    1) I love your videos!! This is the kind of content people should see more of :)
    2) I am interested in the standard deviations for these tests. Were some fasteners more consistent in performance than others? How much confidence can we have in the results we've seen? Introducing statistics to quantitative tests like these can tell us a great deal more about these fasteners and their quality.
    3) Graph/chart of performance (lb force) per cost, perhaps?

    Just some ideas to mull over :)

  • Paul Z

    Paul Z

     5 days ago

    how about stainless steel nails or screws ?

  • Macks Power

    Macks Power

     5 days ago

    This is some very useful information, but it doesn't necessarily mean one type is better or worse, just different.
    Learning the limitations and benefits means you can customize use, make things more efficient etc.
    For example, when laminating boards I'll usually use screws on the ends, top and bottom, then quickly run back over the beam with a pneumatic framing nailer.
    The screws prevent withdrawal at the edges. If separation doesn't start in the field, well, it can't start in the middle.
    The nails in the middle are cheaper, faster, and I don't have to worry about separation because of the screws.
    One of the nails I started using recently seems to have a glue on the shank which is heated and activated when driven in with a pneumatic nailer. I guess we'll see if it helps in a few decades.

  • Tetra Digm

    Tetra Digm

     5 days ago

    thats ALOT of variance in your nails. you need to run this test again, but not use some shit tier home depot 5$ a box nails, and use QUALITY nails. the level of variance between nails of the same type here is disgusting.

  • Scarakus


     5 days ago

    Great enthusiasm, It's like listening to a horse race, lmao!

  • Scarakus


     5 days ago

    1 16 penny coated nail can keep you from falling off a 7:12 pitch roof... lol

  • RD Osborne

    RD Osborne

     6 days ago

    I already know but I'll still watch. 🤦‍♂️

  • cat gath

    cat gath

     6 days ago

    I like using drywall screws as a temp anker. They last long enough to get a proper anker in and help keep the joint together. The fact that they are in the bargain bin all the time helps too.

  • Ken Fullman

    Ken Fullman

     6 days ago

    You claim that the final test shows what happens under repeated motion, yet that's not quite the case. You're pushing them BEYOND their elastic limit so it's not testing resistance to "repeated motion" You're simply finding that the elastic limit is different. Since you don't even measure how much force is required to reach that elastic limit (some will bend all that way easier than others) this last test is worthless. If you really wanted to test their vulnerability to metal fatigue, you should have applied a constant FORCE back and forth. I suspect you'd then have a completely different outcome.

  • Niko Nissinen

    Niko Nissinen

     6 days ago

    You sure it was the nail or screw that moved, not the wood giving up? I mean you can't introduce infinite amount of force to the wooden block even if the nail or screw could handle that. You need a better test to test the nails and screws strenght.

  • John Smithy

    John Smithy

     6 days ago

    Good to know. Thank you for making the video.

  • Mike Sokolow

    Mike Sokolow

     6 days ago

    Wow, my house is all hard wood, except the kitchen and bathroom, built in 1963. Never had squeak one in the floors, been here since 83. Wonder what they used?