The tail-drilling screw uses the tail-drilling at the tail to chip off the tapped object (steel plate, aluminum plate, etc.), then tap the thread directly, and then tighten it. This seemingly simple tightening process, the most critical step is the beginning of the process of tapping and drilling chips. Whether the screw can penetrate the plate and whether the tapping is fast is directly related to the tail drilling of the tail screw.
No. 1 tail, No. 2 tail, and No. 3 tail are used to drill down and tighten in the steel plate, and No. 5 tail and No. 7 tail are used to drill down and tighten in thick steel purlins. It is the most reasonable to choose the corresponding drill tail model according to the thickness of the drilled object, so as to ensure the maximum drilling time and tightening efficiency.
Generally, for custom-made self-drilling screw customers, Hebang Technology will first consult the customer what kind of plate to attack, and what thickness of the plate, and then give the customer a reasonable suggestion to select the appropriate type of self-drilling.