This site uses cookies to help deliver its services and analyse traffic.
Withdrawal! Shear! Nails! Screws!
If you show anybody a screw or a nail, it’s almost certain that they will know the difference between them when it comes to the physical differences. But what isn't quite so obvious is which fastenings should be used for which purpose - the answer lies in which forces each resists. Here, we explain the crucial difference between the nail and the screw…
This is a sort of old BS Fixings science-fair exhibit (winning exhibit, obviously) that you can recreate and it makes you look really wise and sage. Watch out for OUR wise and sage face; it's coming right after this.
Any type of fastener or fixing is designed to resist one or more of the various forces that would naturally prevent the component from holding together. Nails perform at their best when resisting shear force (force pulling sideways) while screws are designed to resist withdrawal force (force pulling outwards). You don’t have to carry out the following test as we have detailed it for you but do feel free to do so if you want to establish it for yourself!
- Take a block of wood and, using the appropriate tool, insert two nails and two screws side-by-side about halfway into the block
- Using the claw of a claw hammer, try to remove first the nail and then the screw
- You will immediately notice that the nail slides out relatively easily while the screw requires much more force, if you can even manage to remove it at all - this clearly highlights the superiority of screws at resisting withdrawal force
- Next, use the hammer to strike first the nail and then the screw from the side
- This time, the nail (though it has probably bent) has held fast in the wooden block while the screw has made its original hole wider, becoming loose and therefore ineffective as a fastener - here we see how nails are better at resisting shear force
Whether screws or nails are the best fixings for the job, it is essential to choose only those of the highest quality from a well-established, reputable supplier such as BS Fixings - starting a project with steel fixings of inferior quality will lead to results of a low standard, with potentially hazardous or even fatal results.
All of our stainless steel screws and steel nails are designed and fabricated to the most exacting standards and a full range of sizes and grades is available to suit. Our highly-trained team are always available to offer competent, authoritative advice on choosing the very best stainless steel fastenings for your unique requirements and, as always, we offer an extremely competitive market price.
For loads of tips, news, updates, offers and more, why not follow us on social media? You can also subscribe to our exclusive newsletter!
Latest from BS Fixings
Introducing Tite®-Fix at BS Fixings
BS Fixings is proud to introduce yet another brand to our lineup - Tite®-Fix! This brand offers a range of high-quality screws designed for various applications, from tongue & groove...
Continue readingNew In! Rawlplug’s R-KEM2 Polyester Styrene-Free Resin
We're pleased to share something special with you – the Rawlplug R-KEM2 Polyester Styrene-Free Resin 300ml has just landed at BS Fixings! This ingenious resin is designed for use in...
Continue readingIntroducing the Premier Volkel Range!
At BS Fixings, we are proud to stock a fantastic range of products from many well-known names in the DIY and construction market, and we’re excited to extend our catalogue...
Continue readingHow Do I Choose the Right Size Drill Bit for a Wall Plug?
In this blog, we’re going to tackle another common question we hear in our community – how do I choose the right size drill bit for a wall plug? Choosing...
Continue readingWhat’s the Difference Between an Anchor Bolt and a Through Bolt?
When it comes to securing anything from the lightest of fixtures to the heftiest of machinery, the importance of choosing the right bolt cannot be overlooked. It’s the kind of...
Continue readingWhat is the Difference Between Type 2 and Type 4 Wall Ties?
If you’re struggling to find the right wall tie for your construction project, you are not alone. Wall ties, essential for the structural integrity of buildings can often lead to...
Continue reading