Type 17 Screws What Are They
Type 17 Technical
Although we often use the term Type 17 Screw or T17 in reference to a specific screw, it doesn’t really refer to the fastener as a whole, the type 17 reference is a manufacturer’s term for the point shape on the end of the screw. This is then nicknamed T17.
When screws are being made the design will include many features, head style, drive type, shank style, material, plate finish etc. and of course the point type.
Examples include type 23, type A, type AB, gimlet and type 17.
All these points have slightly different purposes.
So what is a Type 17 screw and why should I be using it?
So just to clarify, type 17 is just a type of drill point.
For type 17 this is a sharp pointed design with a cut out flute to help capture and remove the waste allowing a self drilling type function similar to a drill bit.
This point type is primarily used in self drilling wood screws for particularly hard timbers like hardwoods. The sharp point and flute cut out helps remove wood chips and debris when drilling, reducing overall torsion on the screw heads and driver.
You find this type of point alot on decking screws, bugle batten screws, hex head self drill screws etc
The type 17 points also prevents wood fibres separating which leads to splitting and so these screws are very useful for close to edge work.
They also benefit from fast insertion and self centering starts and so are ideal for use with powerdrivers.
The sharp point means you can also use them also in thin steel sheeting without pre-drilling e.g. fixing roofing and cladding sheets (this is a very common use for T17 points)
At Scrooz our type 17 fasteners are all branded under our Razr range which denotes their self drilling thread cutting function along with other features.
For more information you can find our range of type 17 screws here: Screws
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Best Regards,
The Scrooz Fasteners Team