Self Drilling Screws

Self drilling screws are manufactured with a tip, that is in essence, a small drill bit. The drilling tip provides the correct size clearance hole in the steelwork to perfectly suit the following threads which subsequently tap their way into the base material, thus, this single fastener is able to perform the pre-drilling and self tapping process in one operation. Applications where timber is fixed to steelwork requires additional features on the screw to create a clearance hole for the threads when the fastener is passing through the timber substrate. Wings are situated above the drill point to create a hole, slightly larger in diameter than the threads on the screws shank, preventing them from engaging in the wood; should they do so, each turn of the thread could force the drilling tip forward at a rate which is faster than it can actually drill the metal ahead, causing overheating and breakage of the tip. Other features of self drilling screws can include built in neoprene washers which provide a water tight seal when the screw is used to install roof and wall cladding sheets and sections of smooth shanks to accommodate thick insulation material. The number of applications for self drilling screws has massively increased and there are many variations of self drilling screw now available to include; self drilling drywall screws for thick metal track, self drilling window screws which can be used to attach door furniture to aluminium or steel reinforced sections of UPVC profile, countersunk Tek screws for fixing timber flooring to purlins, hexagon headed self drilling screws for fixing brick ties and bracketry to steelwork, wafer headed self drilling screws for joining drywall track together and even self drilling woodscrews which create their own pilot hole to eliminate splitting in applications such as secret fixing of tongue and groove flooring. Self drill screws are used extensively in modular building, roofing and cladding, automotive, construction and drylining industries. When selecting self drilling screws it is essential that you establish the thickness of the material to be fixed and the thickness of the base material you are fixing too. If you need to save time on installations that may currently require pre-drilling why not consider self drilling screws from Protrade?