Which Type of Nail or Screw Has the Most Holding Strength? Let's find out!

  • Published on: 25 March 2019
  • The difference in holding strength among different types of nails and screws is amazing! The type of coating used on nails and screws makes a huge difference. In the video, 5 types of nails and 2 types of screws get tested for tensile strength in untreated 2x4s. Each type of fastener is tested 7 times and the highest and lowest strengths for each fastener is "thrown out". The types of nails include 16D coated, uncoated, galvanized, spiral shank, and ring shank. The types of screws include 3.5 inch drywall and coated deck screws. The Project Farm channel offers 100% unsponsored content and doesn't try to profit from Amazon products using the affiliate program. The goal is to provide viewers with unbiased reviews to help them save time and money. 100% of video ideas come from viewers. Thank you all very much for offering video ideas. It keeps things fun and interesting. Also, thank you very much for supporting the channel by watching the commercials and through Patreon support. https://www.patreon.com/projectfarm

    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
  • Runtime : 13:10
  • Seafoam additive oil crankcase sea foam lucas marvel mystery oil marvels marvel mystery oil seefoam Sea foam Seefoam See Foam does seafoam work wd-40 project farm amazon basics oil mobil 1 synthetic oil which nail has most holding strength spiral shank galvanized nail coated sinker uncoated 16 penny 16d nail deck screw strongest nail ring shank nail nail testing nail strength screw strength project farm nail strength test nail holding strength


  • Makita man
    Makita man   13 hours ago

    I am so glad I came across your Channel. I love what you do you you schooled me on some things I didn't know thank you. Peace brother

  • Logan Capes
    Logan Capes   1 days ago

    the force required to pull a nail out will vary wildly depending on the angle of the nail in the wood. in the future use something to guide all the nails into the wood as close to perpendicular (orthogonal) as possible

  • Andrew Johnson
    Andrew Johnson   1 days ago

    One thing, you might re-do your corrosion test - here's why: Once you screw a deck screw in, you have affected the corrosion proof coating. I'd screw them in, unscrew them, then compare them to regular nails. I'd also hammer coated nails, then pull them out in that same test.

  • Noah Coward
    Noah Coward   1 days ago

    For the spiral nails I think the jig you used takes away a lot of the purpose of the spiral. It allowed the nail to spin while pulling which in most cases wouldn't happen in a real life scenario. I've tried pulling spiral nails with a pry bar, which doesn't allow the nail to turn, and I've had issues doing so.

  • Christopher Paige
    Christopher Paige   3 days ago

    The spiral nail would hsve held better if it was not allowed to spin during extraction because they act like screws... That's why we call them screw nails and are a bear to remove. Ever notice how wood pallets are constructed useing them?

  • Caleb Sexton
    Caleb Sexton   4 days ago

    The deck screw needed to be down further for the special threading at the top to do its job

  • Inspector Steve
    Inspector Steve   4 days ago

    I'm not really following these tests. I get the corrosion test. I'm not getting the pull force test. Nails and screws are designed totally different to preform different tasks in different situations. Unless the screw is made from weak metal and breaks it will always beat a nail when pulling straight out.

  • Nick Mackey
    Nick Mackey   5 days ago

    Drywall screws may have performed well in your "holding power test" but they will ALWAYS be the first fastener to last the shortest amount of time if ANY moisture is present. I've literally removed sheets of plywood used as subflooring that were less damaged than the drywall screws used to fasten them to joists.

  • Dustin Livingston
    Dustin Livingston   6 days ago

    Would you consider letting the wood dry out with the fasteners inserted and see how the fasteners hold up. Love the channel!!

  • nick mccarty
    nick mccarty   6 days ago

    As always very informative I always check your videos when in purchasing a new product keep the videos coming always enjoy them

    UNDERHILL   1 weeks ago

    coated nails have to go all the way in (really every nail), invalidating every one of those tests. As you pointed out at the start, the gripping power directly equates to surface area of the nail in the wood. At a minimum the holding power is not relative to the actual nail spec.

  • Ophir Memories & Illusions

    It was obvious that that the screws will be better, but I was very surprised to see the huge differences with the nails.As usual great test. 👍👍👍

  • PantsForTwo
    PantsForTwo   1 weeks ago

    I don’t know if someone has said this, but you should only throw out the high and low values if they are genuine outliers. I would recommend using a Q test at the 95% percentile (but a lower one would suffice.) otherwise you are throwing out genuine valuable data, that would get you fired at my lab lol.I recommend googling Dixon Q test but here is a quick example:Find the Q table for 95% and the n (number of samples) that you have. That is QcQexp = x2-x1 / xn-c1x1 is the smallest (suspect) value,x2 is the second smallest value,and xn is the largest value.If Qexp > Qc it is an outlier.Otherwise it should be included.Love the videos!!!

  • Cody Britton
    Cody Britton   1 weeks ago

    I would imagine if the spiral galv nail might also do better through two boards as it may cause a bind on the spiral. Kind of like double nutting a stud.

  • SwaffyX
    SwaffyX   1 weeks ago

    This makes me think of the screw studs used in engine blocks, when you start adding crazy power (1000+ hp) basic studs will stretch and the engine will blow. I saw some engine that ran 100 PSI of boost (from turbo) and the studs I think were custom fabricated

  • Seth Kaye
    Seth Kaye   1 weeks ago

    Screw that test. What’s best IRL?Rematch into real wood smashed with the forces experienced in reallife! Nails ain’t gonna be pulled out from their head overnight, but ceilings will drip down slowly over time due to gravity & decks will fall out due to weathering/rust. Screws might snap with shear stress. So it’s not always one or the other. Be specific to actual use cases. What is best to use for common applications? Where does each fasteners excel and fail? Fine Furniture vs. Quick Construction, Joist Hangers - Exterior Decking vs. Interior Framing, Angle of Install- 15/30/45/60/75/90 degree angles relative to horizontal, vertically on top of posts down to the ground vs. vertically up into the ceiling, horizontally parallel to the earth, Use with Various Materials- hardwood wood, soft woof, metals - aluminum, iron, steel, tile, concrete, brick, plastic, drywall, jello etc., Use with Various Thicknesses - 2x4 to 2x4, plywood to dimensional lumber, Multiple Different Materials,Grain - With vs. Against X/Y/Z Edge Cases,Corner Cases,Special CasesWhat Else?vs. Bolts+Nuts?

  • 1badpete999
    1badpete999   1 weeks ago

    You can't compare screws with nail your sending the wrong message you forgot about side shear wall force , a gyps screw if bended will break like glasses , if construction codes demands nails and structural screws its for a reason if your house face strong winds and the roof lift up just a few inches that would break these gyps screws like thin glass ,there are specials regulated structural screws who are approved and even better than ring shank nails , they are called ''structural screws'' some are sold under the name of Simpson Strong -Tie or the one i really like a lot the GRK's , a good nail to be approved got to keep its grip even bended in half , I worked in a prefab house construction factory for a long while every nail and brackets got to be tested and approved , some area only approved the ring shank for air hammer nails (no one use a hammer in production construction anymore ) some people trying to save money construct framing out off indoors floor screws who are the worst to face humidity they will rust really fast and turn into dust just after a few years , if you use them in treated wood they just melt into the damp wood like powder ! The cheap chinese imported drywall screws and floor screws are made from any leftover different metal parts they can find you never what kind of hardness you will get from one batch to another , the structural screws and nails are graded and tested , i wouldn't even build a doghouse with gyps screws ! If you use drywall screws indoor to hold your flat screen tv wall support don't be surprised to find your tv on the floor ! https://www.youtube.com/watch?v=N3jG5xtSQAo&t=376s

  • uncletoy
    uncletoy   1 weeks ago

    ok question about the swivel nails in softwood not working well then how come they are just beasts to pull out in pallets a lot are made out of pine

  • Raxis
    Raxis   1 weeks ago

    the spiral nail might also do better in an application where its not allowed to spin as it comes out, cause a 2m deck plank doesnt suddenly get up and spin

  • milose
    milose   1 weeks ago

    In my totally imaginary projection, If you stopped the rotation of the moving part the spiral would do a bit better.

  • James Kanipe
    James Kanipe   1 weeks ago

    What kind of pulley system do you use? What is the ratio?

  • theezZENtials
    theezZENtials   2 weeks ago

    im new to the channel watching a ton of your vids so im new to the comments party. my 2 cents- both have their place. screws grip but nails bend, screws snap!

  • Chicken Maniac
    Chicken Maniac   2 weeks ago

    How did no one else notice the spiral nail didn't have a fair chance because they were allowed to spin where when they would be buried into 2 or more pieces of wood they would not rotate freely. 6:30

  • BR4KE
    BR4KE   2 weeks ago

    8:57 thats literally what a toyota aygo wieghs nearly thats a freaking car!

  • Tom Bulger
    Tom Bulger   2 weeks ago

    I just saw one of your video's testing shear strength.

  • Tom Bulger
    Tom Bulger   2 weeks ago

    I was not surprised the holding strength of ring shank nails due to the difficulty of removing them with a hammer. One of the important notes is the use of screws instead of nails is the shear strength and local codes. Along the coast of Texas where hurricanes are a possibility (I live in Rockport and we got hammered 2 years ago), I had to remove screws and replace with proper nails. I do not know how you would test for this but engineers a lot smarter than I have.

  • Keith Mikell
    Keith Mikell   2 weeks ago

    we need an air hose durability test done. From harbor frieght all the way up to the best you can find, which is probably goodyear.

  • Warlordzero1
    Warlordzero1   2 weeks ago

    The Nail and screw test was a great test and me who loves wood I love screws and nails. do you ever get tired of pulling those chains to test different items.lol?

  • Sir Vogels
    Sir Vogels   2 weeks ago

    Screws snap nails bend that's why you use nails

  • chuck miller
    chuck miller   2 weeks ago

    Screw nails dont hold as well as regular nails, we used to use them building storage sheds. Ring shanks are good, galvanized ring shanks are great. We use something called a scrail, its a Phillips head screw that is driven in like a nail.

  • Babayega X
    Babayega X   2 weeks ago

    To be honest I've never googled what exactly "galvanizing" means but I remember back in my woodshop and framing class in my first year in college my professor told us that it was basically like a bonding glue agent on the nail and when you hit it with a have the heat of the nail going into the wood caused it to melt and reharden again and basically glue the nail in place and that's what made it so much stronger. If that's true or not I'm not sure. But that's what he told us. If it's not true maybe he meant it as a "example"of how the process works if infact it's not a glue type material. I don't know. Anyone have any additional information on what that coating is on the outside of the nail? And if it is in fact a glue type agent that melts with the test of it being driven into the wood and then harden in place? Bonding then together from the inside out?