Disadvantages Of Self-tapping Screws

* Self-tapping screws though are very easy to drill, sometimes need a pilot hole to be drilled in advance.

* It is necessary to be very cautious while using them because if not drilled properly, the hole created by them might become very big and hence the fittings might not be proper.

* Care to be taken not to over tighten them which otherwise might damage the material or device completely. Order it now from Tappex Ltd official website.